[outofcuriosity]

Perhaps when we select books to read them, we only do so in order to describe ourselves as a "Calvino reader" or a "Russophile" as much as the author rejects Bukowski so as to be thought of as "a person who despises Bukowski." In that case, forming an identity through the art you arbitrarily despise and have not experienced seems only slightly more flimsy than doing so through the art you have experienced and have a real opinion about.

But, I think most of us read to learn or to gain new perspectives, etc. So, openly hating things you haven't experienced or examined critically is about as anti-intellectual as claiming to have read things one hasn't. Why not just say, "I am more interested in [some type of fiction with certain themes], and my reading list is quite long." Easier and doesn't freeze out the conversation quite as badly.

I still haven't read Bayard's "How to Talk About Books You Haven't Read"...