There are absolutely actors who are down to do that stuff but you can’t hire people with a script sight-unseen and just drop stuff on them that might straight up give some people a panic attack to even think about, let alone re-enact.
Title makes you think there are actors who don’t want games in general to contain explicit adult content, but this is 100% reasonable, and yet another reason voice actors and game industry workers need to unionize.
I bet your ass the same shit is happening with asset creators and animators.