VA cost money , it extends time for updates, both in recording and in codeing it into the game , and adds some quality control issues. I would also argue it can take people out of the game if voices don't match the characters.
no both because i would prefer human made and because despite being here AI generators of images/vids all feel like they are funded to straight up unquestionable CSAM
there was a now abandoned game Off The Record, which didn't have much sex that had a good story that could have been a full sexless story i wouls have read through, also goblin layer