Well, we've already sort of discussed the chimera thing, which seems to be another inappropriate Halsin-related joke (that fortunately has been cut). Chimeras are self-aware magical beasts with some capacity for language, so they're not quite animals, but they're still probably far from being able to give informed consent when it comes to sex. Larian obviously wasn't thinking about such things when they wrote that exchange, though - they just thought it was funny. This game is full of dark humor.

I remember some controversy over a similar "humorous" exchange between characters in Pillars of Eternity 2. It didn't make the final cut either, but folks found it in the files. Humor is quite a tricky thing (as are issues surrounding sexual abuse).