It's the 21st century and sexuality is still scaring people.
I guess it's just the devs protecting us from dickheads that would create gratuitous porn rather that exploring sexuality as such. Enough abuse of woman already. But I wouldn't want to be training an AI on porn either.
Yea, I understand the justification, particularly when it comes to children and violence against women. I don't agree with the whole women are being "objectified" trope of old. Too subjective and ripe for abuse by those who want to gate-keep sex.