I think existing porn sites do have a lot of potential blackmail material, but it's mitigated by the fact that the vast majority just look or watch. 1/

even just watching might be dangerous for some predilections or fetishes. viewers of child porn sites are obviously subject to blackmail. but i do think there's an attitude of general amnesty towards merely watching of all but very extreme forms of porn, since it's so widespread. 2/

but chatbot erotica will be different. it's participatory. blackmail material will result from what people themselves say, how they behave, even towards a fundamentally imaginary partner. 3/

transcripts or requests may seem egregious, and sufficiently unique so as not to provoke an "everybody does it" impulse toward amnesty. for any given event, most of us will say "ick, how horrible, i'd never say or do that", rendering it costless to judge. /fin