There are the horror fans that love the 'Evil Dead' because of the humor, but I'm sure it's not all of them. Not all horror fans love 'Evil Dead' because of the humor, at least not me.
When art seems to be empty of meaning, as no doubt some of the abstract painting of our own day actually does seem, what the painting says, indeed what the artist is shrieking at the top of his voice, is that life has become empty of all rational content and coherence, and that, in times like these, is far from a meaningless statement.