We are never going to agree here. I’ll counter back and then you will counter. In the end it all comes down to a matter of opinion. We can argue about fictional genetic viability of it being used for fictional marines.
Me personally see it as pointless retconing for the sake of “inclusion”. I for one hope that doesn’t happen, not based on not wanting women in game, based on thinking they should create something new if you want to include more females. Never go full Ghostbusters. Don’t replace, create.
Still, I respect your opinion, and politely disagree with it.