Dick can be really rewarding, although he's definitely not to everyone's taste, or a particularly good stylist. This is true of other great writers who deal in extreme psychological states - Dostoyevsky for example. The extreme state for PKD was a metaphysical paranoia (probably augmented by amphetamine abuse), which many people can relate to, although it's usually not as intense or as intricate as in his novels. Dick was often writing autobiographical science fiction, which is an absolutely unique vision, though not one I'd like to experience first hand.
I'm no authority on Russian literature but I've never agreed with this criticism of Dostoevsky. His writing is of a different kind, one that has its own logic. This article does a good job of explaining it I think: https://www.americanpurpose.com/articles/the-master-of-peter...
