horror is a subgenre of fantasy
I was waiting for somebody to say that. I'd stress "supernatural" horror, which I'm sure you meant. For a movie reference,
Silence of the Lambs was, alas, simple fiction and not "fantasy", but stories about vamps and werewolves and so on are fantasy, so I was puzzled by reading a lot of "she's not fantasy, she's horror" which at least sounded like they're antithetical. (I know fantasy and horror are distinct marketing labels and even said she straddled them, but I meant in a "closest fit" sense, not in an antithetical sense.) I suspect many fantasy fans dislike horror (which was one of several reasons why Rice isn't fully embraced) but I see it as a subgenre, still. I think the early vampire books might have failed if they had been marketed as horror because they aren't scary enough, in a sense. It's often a very refined existential horror along with a bit of the usual vamp blood stuff. Conceptual horror more often than visceral horror.
So I don't think that SFF fans have rejected her. I think that she has rejected the genre.
Does she denigrate fantasy, itself, or just try to avoid the genre pigeonhole? For instance, while Atwood appears to be coming around, she long tried to avoid the SF genre
by denigrating it, which annoys me. It's less annoying if they praise or ignore the genre and just don't want to be part of it.
Teresa, you seem to be saying that it is fantasy, but not widely accepted as such for various reasons. I completely agree. And surely the reason Anne Rice can distance herself from 'fantasy' in the modern sense (which I maintain has narrowed as a definition from a marketing perspective) is that her books don't have many of the typical fantasy tropes, instead they have gothic horror tropes. If a narrow genre is required to help find similar books, then I'd have thought 'gothic horror' would suffice.
I'd agree with this except I think part of why I like it is that it's not pure slasher "I'm trying to make you run screaming"
horror horror. It's trying to be more creepy weird semi-repulsive semi-attractive dark stuff. I know (well, think I know) "horror" embraces a wide spectrum of intensity but (maybe much like heroic epic fantasy is considered all-fantasy by those not in the know) horror to me means way more horrific stuff than I'm usually interested in. When I go that direction at all, I just like the creepy goth "weird" fiction.