Vanilla is a product of Lussumo:
Documentation and Support.
These are often very clever people. Their re-parsing of extant works can be very exciting, just as the Grey Album was very exciting. It is obvious, though, that some people don't respond in a lasting way, if at all, to these operators because they don't evidence the spark of what most people think as "creativity" -- making something from as unique a whole cloth as possible, speaking with their own voice and showing up with something they want to say.
Or, at least, something to say beyond "see this thing I found here? Look what happens when I do this to it."
(Which is why Erro is so disliked, because often he doesn't even bring that second sentence in.)
(And it's not like Warhol was universally loved then or now.)