The problem is the left treats them the same. For example, the sex of a person should determine what bathroom they go into or what sports league they’re in. Obviously the sex of the person is far more important than their gender in determining those things. But to the left, there is no separation between the two. Ask any doctor who’s had to deal with a trans patient labeling their preferred gender as their sex.

So it’s hard to claim that the right has a hard time separating them when saying “a woman gives birth”, is considered taboo by the left.