Hot take, but I would say * most * people don't value writing as a skill as much as artistic skill.
When it comes to visual media, spectacle is everything. Whether it's pointless shock-value drama or expensive CGI, if you can grab people's eyes and just manage to hold their attention for long enough, I'd say 7 times out of 10 you'll have gained a viewer. No matter how awful the underlying story is. I'm sure many of you can think of examples in pop culture that exemplify this. ^^;
And honestly, even when it comes to prose, this rule still holds up, only the spectacle is in words instead of images.
Right now, I've got a stack of manga in the corner of my room adapted from the most horrendous (but fairly popular) YA novel series I have ever read-- a couple years after I bought them, I was volunteering in a library, and I decided to go ahead and check out the books to see what all the hype was about...only to find that the source material was just...a colossal joke. :T
The writing was decent on the surface...like, it was constructed well enough to successfully immerse me in the story, the same way pretty art will pull you in. But once you stop to think about what you're reading for even a moment, you quickly realize that the actual events don't make sense.
The story revolves around a steady stream of endless drama, mixing actual life-and-death situations with deception and manipulation to try to keep things fresh. Half the time when the MCs (conveniently) manage to escape the villain-of-the-week's terrible plot, they're told "it was just a test, it was just a trick; we wanted to see if you could do what we created you to do".
At first, this is compelling-- it seems as if the characters really are rats running through a worldwide maze. But after a couple books' worth of this nonsense, it becomes apparent that this is just a sad, lazy cop-out to cover up the fact that the author doesn't know what to do with the story, beyond putting the kids through yet another 'wacky situation'. There's no learning or real character growth for the antagonists or protagonists, despite how serious and edgy the series pretends to be. Just more drama, more love triangles, and more situations.
The one character that actually did get a successful character development AND redemption arc had it LITERALLY reset so they could be a badguy again for the last two books, and I was SO ANGRY I GRHGRHGHJADSIJFOA;SKLNFASLKN;D;NLK--
...Anyway, the point is that this series really wasn't written well. Like, it REALLY wasn't written well. The manga was discontinued right around where the story started to get really stupid, and sometimes I wonder if that was on purpose...
I only doubt it because I don't think most readers would notice how bad it is. ^^: Like I said, the writing looks good. It's professional-sounding, it has a good balance of humor vs. seriousness; it doesn't feel like amateur work. And despite being complete idiots, the characters are entertaining. They do and say interesting things.
And for most people, I genuinely think that's all a story needs. Even in a better story that's planned out well, that's all they can see; the issue is a lack of insight. The average person doesn't really know or care about what separates a quality story from one that's just flashy and fun (in isolated instances...). Which is why most non-authors think writing is easy, and most beginning authors don't know how to get better (being repeatedly told "just write more" or "just read more" doesn't help, as many have pointed out).
This is also why 'flashy and fun'...sells. Bad stories can still easily become popular as long as they look good; it makes total sense that writing is valued less when it literally has less value, in a way. Bad art will be immediately apparent; meanwhile it could take audiences a year or more to wake up to bad writing, and by then even if you get canceled you'll have already made your money. It's not hard to see which one is the smart investment.
I'm not really sure what can be done about this besides promoting literary/film critique, and trying to help fellow writers learn how to hone their craft. ^^; I think if we can just keep raising the bar when it comes to storytelling, and explaining how it works and doesn't work to anyone who'll listen, people may someday come to value it more.