"The Philip K. Dick I've discovered in the Exegesis reminds me of two other unique visionaries: Antonin Artaud and Emmanuel Swedenborg. All three delved into alternate realities with unique results. But Artaud was ultimately deemed mad, institutionalized, and subjected to massive electro-shock therapy. Swedenborg died peacefully, respected (and feared) for his elaborate visions of heaven and hell; and after his death his followers founded a new church centered around his revelations.
"Luckily, Phil didn't have to suffer Artaud's fate, but it remains to be seen whether the Exegesis lends itself to the creation of a new Dickian religion. The possibility is a little grotesque, but stranger things have happened—many of them in PKD's own writings."
PKD Society newsletter #3 (thanks to Frank Hollander for posting this)