Honestly that writing advise issues hits the nail on the head.
Alot of new writers tend to take thier advise from online personalities. On surface level there isnt anything wrong with that. Free learning resources and information is always a good thing
But alot of the advise pushed up in the social media algorithms are more... personal bias rather than actual advise and 9/10 more to make the creator of the advise thread or video to look like a good person rather than actually help people.
I will always rember the brain let of a thread that said "dont write enemies to lover. Friends to lovers is a better romance" or something akin to that.
Bruh I might as well say "don't write human X human. That makes your story boring. Nasty monster X human is the highest form of love".
It's a personal bias rather than advise.
I see it alot in genres looked down upon. Like writing a romance book advise can boil dont to "dont make romance a big part make (insert what the writer of advise likes here) more prominent"
"Dont use use that immature unsofisticated toilet humor ever" even thou that kind of jokes do appeal to people especially if done very well.
"X is too dark to ever have"
"Sex/violence should always be implied never shown cus-"
"Never use modern slang in dialogue EVER"
And so on and so on
It takes years to identify the ocean of bad advise from the nuggets of good. It's honestly good some people are asking questions to grow out of that kind of thinking from people with more experience