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
The Exorcist (original) is one of the most boring horror movies I've ever personally sat through and I have no earthly idea why it caused such a stir at the time. Whole movie is a snooze fest until the last bit, but I found it less scary and more humorous.
To understand this you have to know that at the time when "Jaws" came into cinema there were people leaving cinema during the film because they "couldn't handle it". There were even newspaper articles about how the movie allegedly traumatized people. The same goes for movies like "The Shining".
When "The Exorcist" came out people were not prepared.
When so many people have done similar things but have improved and refined those things before you see the original, its very hard to have that same reaction to it.
Like people shitting on Greta Van Fleet for sounding like a Zepplin 2.0.
Have multiple generations come since the last time zepplin was on tour? Yes.
Does the world not get to enjoy people who sound like that live in concert because zepplin existed and there are unmistakable similarties? Kinda shitty if so