I’ll go first. Mine is that I can’t stand the Deadpool movies. They are self aware and self referential to an obnoxious degree. It’s like being continually reminded that I am in a movie. I swear the success of that movie has directly lead to every blockbuster having to have a joke every 30 seconds
I think one of the differences (at least when I watched anime way back in the early 00s) is that anime relies on a whole different set of tropes from Western movies and cartoons, and those tropes are unfamiliar (or were, anyway) to Western audiences.
When I started watching anime, it was hugely refreshing to be caught by surprise by plot twists and dialogue, and to see characters & themes that felt totally original.
But then you watch more anime, and realize…oh, they weren’t unique, they were totally stereotypical. You just didn’t know the stereotypes they were based on.
And before long you can see plot twists a mile away, the characters are predictable, and you can describe a new series as “basically X, but with some Y and monsters instead of robots”.
It’s the false promise of that initial discovery that makes the eventual realization that much more disappointing.
Agreed, the novelty of anime was a huge draw for me as well (especially since at the time there weren’t any anime-influenced Western cartoons). There are of course still standouts in anime that were revolutionary at the time and have since aged well (such as NGE and Cowboy Bebop, both of which are now over two decades old). There are also a few series that maybe weren’t masterpieces but still feel unique, as well as a handful that are cultural behemoths in and of themselves (like Gundam). But as with all media, the more you consume the more patterns emerge until the whole medium starts to feel tired.