Male sims can get pregnant without being raped by aliens, in TS4. It is a setting in CAS.
For TS3 there is a very widely used mod that allows that; and in combination with the current discourse on non-binary, I am guessing (speculating of course) that the sims development took inspiration from it.
I like it.
Edit: the feature I am referring to, that got censored, is male sims being abducted by aliens in the game, to a rabbithole, and when they come back, there is no notification on consensual sex; but they are pregnant. I find it incredibly offensive.
It is also highly ironic that I cannot call it by name in the forum for the game; yet it is a feature in 'vanilla' game.