It's so subjective though. I think more or less people have this feeling with whatever things-other-people-call-art that they find boring/uninteresting/meaningless (as opposed to just bad). Which makes it feel less subjective, because the categorisation still allows for things you don't like to be art, but interesting/uninteresting is still a very subjective judgement.

(for example my subjective view finds explorations of abstract concepts to be a lot more interesting than most fine art, which most people would normally consider safely in the 'is-art' category)