Yeah, I really think it's a type of media illiteracy, and it's much larger than just sexualization.

Like, I grew up in the church, and remember when they adopted the Left Behind novels into church canon as prophecy. It's the same kind of not being able to tell fact from fiction, and my parent's church encouraged it because they were a bunch of con artists.

Somebody else said that, not me. But regardless, it's still a problem with people not being able to recognize fact from fiction. Makeup is not the problem, the problem are people who expect you to to look like that without makeup. Boob jobs are not the problem, the problem are people who think there's something wrong with you if you've not had one.

If they replaced everything with mocap tomorrow so actors didn't have to look the part any more, the problem would still be that people look at Marvel and think it's an accurate depiction of reality.

"can be" ⇏ "has to be"

And it's not fiction that sets high standards, but the people watching it, that are doing so.

Now you may say that the people are setting those standards only because they are watching said stuff.
But that is just rephrasing, "the people watching fiction are incapable of having their own imagination".

Back in school, I had a classmate that had a much greater height than others, due to steroid usage.
Now if you say that his parents did that because they watched "JoJo's Bizarre Adventure", I'll say it was not released yet and I have no reason to believe that they bought comic strips from another country and went ahead and made a 'gag' piece a basis for their standards.

Nah, fiction needs unrealistic elements. You can have realism in fiction, but fiction is defined by its deviance from fact. If a movie were completely realistic, itd be a documentary.

If you swap the words "fiction" and "fantasy" in your post, it makes the same amount of sense.