It reminds me of back in the early days of dub anime when children couldn't handle Japanese names (or Japanese anything and also heavy censoring because all cartoons are for kids) and Shinji is now Shaun. (I say early days like this isn't still happening constantly)
Like the "donuts" in the dubbed season 1 of Pokemon that were origini? xD This really confused me back then. I didn't know what origini was obviously, but I was really confused why it was called a donut. It bothered me FOR YEARS.
Doraemon and Yokai Watch are two recent examples of shows which were heavily edited to the point where they try to convince you they takes place in America. It is embarrassing and it sort of messed up the English translation of the 3rd Yokai Watch game where the MC goes to the US.
However, I think it is worse when the mindset bleeds into how we treat real people. Here is an animation based on something someone had to deal with growing up in the 1950s.
This also will sometimes put pressure on foreigners as well. I grew up in an area where Korean students would have a 2nd Americanized name which they wanted everyone to call them. And my latino grandpa usually had people call him Bob.
I think it depends on your audience and if they will accept it. If you're aiming for an "everybody" audience, then you need to use more generic names: Ron, Harry, Edmund, Lucy. And then have them adjust to accepting the odder names as they're introduced into the world: Severus, Chiron, Dumbledoor.
I try to follow the rule personally that only made-up names or out of place names are reserved for special people in special cirumstances. Rhys, odd but kind of normal, but again odd that it's placed on a minor character. All in a high fantasy world. Just because it's high fantasy doesn't mean I need to use entirely odd names.
One of my oddest is probably Phyte, because it's a shortened nickname of his full name Neo Phyte, which is an actual word "neophyte", which is a cruel comment on what kind of person he is (and then you pronounce it as Fight, which just makes him sound combative). It all plays off each other. Then he has a naming convention of his servants are all named after birds except one: Dove, Crow, Raven, ect.
I mean, despite my whole post... my two main characters have REALLLLLLY normal names just like that 
so, no, you’re not wrong at all 
That’s so funny to me I legit just had a funny mix-up last week where I was mentally in the wrong story but it had the same-name character and my brain was just like
I do try to give all my (important) characters last names, at least 
I always give last names, even to minor characters because if I didn't, even I would get confused lol
I finally charted out a family tree (for a really big, extended family) a few weeks ago and half of them still don’t have last names but most of them barely even show up side characters, so it’s all good. At least they have names and I’m clear on how they’re all related
I always give last names unless I can't for plot reasons. For example, Shilo has no known last name because even he doesn't know where he came from or his own mother's last name (it's actually Castello but my readers don't need to know that )
But yeah all my other characters have last names. Sanborne, Clovehart, Gallo, Swift, Arena, LaRou, just to name a few. My favorite is actually Martin's last name, Gale. Because it alludes to a type of training collar called a martingale
See that makes total sense to me— your character doesn't have a last name because it's a plot element! If it's too much for me to come up with a specific last name, that's when I throw in "Smith" or "Johnson" or whatever else common last name for their ethnicity etc. 
As someone with an "unusual" name myself, I'm bored of always seeing the same ones in fiction. Especially given that mine isn't actually unusual or foreign to English speakers, it just takes more digging on a baby names list to find.
While the advice is also pointed towards a western audience, well, I do live in a western country and there's one person out of the 20 I work with that is a Jack, Paul. John. I think it's pretty outdated. To echo Diego, a more realistic approach is pulling from multiple countries/ cultures who have their own Jacks, Johns and Marys.
Yeah, I thought about that but I didn't wanna have to say "pit lick" each time, so yeah. "Pet lick" was a close second though!
Oh my god don't get me started on names. My first name is already a bit unusual where I live and it's constantly misspelled. And seeing a work with only 'normal western' names like Jason, Samantha etc. makes me roll my eyes so bad.
No, I don't mind this at all. Even names unusual for certain can have a history explaining why character has such a name and be a part of understanding that character.
Also some names have different variants in different languages, like Andrew has same roots as Андрей or Andreas - all come from greek word meaning "man". I saw examples in Russian modern literature where Андрей would be called Andy and it signified that character is western-leaning type of person and trying to look cool and different from people around.
On topic of just unusual (like fantasy) names I don't mind that too, but I'd say there is a hard to explain difference in quality of those. Some names can be a tongue twisters but still stick and be memorable, others seem simple, but fall out of memory with ease. I think that is less problem of "unusuality" of name but rather if name fits the character.
I don't want the names so confusing and long I can't comprehend them, but I prefer a slightly unusaul name. Boring names are also fine if it matches the character. You do have to think about the personalities of the character's parents--what would they have named them as? It's not just about marketing, it's a huge story building tool. But if all the names are the same and boring I forget who's who.
That reminds me of my other rule: I don't share names lol
If someone is named "Jim" his name is Jim, and no one else in the entire story - or in my writings EVER is named Jim. Generally.
I do have a red-head named Will 
but he's from a super old version of a story involving Hito that just... isn't a thing anymore. And he was so minor. I don't even think of him as a character named "Will" anymore.
I do give pretty much everyone last names that are required to have them. (Older or special characters do not have last names if it's not part of their culture. ie Neo Phyte I mentioned before - Phyte isn't his last name. It's just the truncated name people call him as, unless you're his beau (or best friend) and then you can call him Neo.) But he introduces himself to people as "hi my name's Phyte".
I mean if I’m being honest, then I don’t really mind. I like adding uncommon and rare names in modern setting stories and doing the same to fantasy. I’ll have some people with names like Atlas, Wayra, Calder, and Oracle in one story but also have much more common names like Charlotte, Nicolo, and William in that same story.
It really depends on the person. Not so much the story type.
I think a lot of it depends on the tone of the story. If it's a more lighthearted story and doesn't take itself very seriously, I don't mind unusual names. If the story wants me to take it seriously, unusual names can be annoying.
This applies to all genres. High Fantasy that's really self-serious and has ridiculous names with a bunch of apostrophes and stuff is really annoying. Fantasy that's goofy and knows it's goofy having ridiculous names is just part of the fun.
It's all about what's tonally appropriate.
