Nabokov is the proof that being a genius writer doesn't always imply having good taste. For example, see his opinion on Henry James, Faulkner or Camus.

The man wrote what he wanted to read and hated everything else.

I think that in general some artists are this way and that makes what they produce different from anyone else. Jonathan Blow for example is snobby and hates a lot of stuff, but his intense and specific ideas about the way games should be has led to some very interesting and thoughtful work