You just don’t get X, if you got it, you love it/accept that it’s truly great.
I’ve heard this argument referring to Fight Club, The Usual Suspects, Memento, The Godfather, The Big Lebowski, Showgirls, Starship Troopers, *Lost in Translation (and various other movies), rap music, classical music, Zippy, Makies, Adam Sandler, Jim Carrey, comic books, LOTR (movie and book versions), The X-Files etc.
It is sometimes true that people dislike something primarily because they do not understand it or see only the surface. It is, however, insulting to assume that anyone whose opinion differs from yours necessarily lacks the intelligence to understand it.
Likewise, I hate this similar argument:
You can like or dislike something, that’s your opinion, but regardless of anyone’s opinion, it is an objective fact that work of art X is (well made/poorly made/a work of genius/a piece of trash).
Sorry, but no matter how strongly you like something, how much time you’ve spent studying it, how many critics you can cite that agree with you, no matter how well you defend your opinion, at no time does your subjective evaluation graduate from opinion to fact.