Yeah, what they’re asking for is pretty standard stuff in other media. A friend of mine is an actor who played a scene where he had to shoot a masturbation scene. He was alone in a room with like 3-4 people: sound guy, camera guy, director, and I think the intimacy coach was there too.
Having a whole team watch you pretend to have sex is not okay, what the hell.
I think “common” here would refer to having to produce them, over the actual explicitness of the scene. Whether Mass Effect fades to black or not isn’t really the point when the voice actors still have to record the lines that play while the screen is dark.