not all levels have to be good for a person to enjoy the game. it's just that the levels appreciated by the wider community can be unappealing to someone, which creates the impression that they hate the medium as a whole - they don't, they value their own little treasures

it's the same thing as with movies, really. it's pretty wild to me how the apparent majority of the community thinks that most (at least, rated) levels are good when this is clearly not the case with like any other art medium