If you switch out words of gender with words of race, it may sound more offensive. That is what the Youtube CEO said and it immediately began to make sense.
"Birth control for blacks", "we need more jews in STEM", "no blacks in the whites only bathroom".
They're more offensive because unlike race there are very real and relevant biological differences when it comes to gender. And whether or not that applies to STEM probably shapes your viewpoints on this subject.
In the best case, that argument only has a little utility. However, it's a pretty bad argument now, since political correctness only allows you to make those kinds of swaps in certain cases. Nowadays, it can only be use to amplify the outrage against an already-identified villain.