Mecheon
Sacabambaspis
Wait, you're arguing that men are better than women in real life, because we are stronger? I disagree with that. If you aren't arguing that men are better than women in real life due to us being stronger, then it is not sexist in D&D to only give men the strength bonus. It's not sexist to model fact.
That said, you could give women a con bonus. Women deal with pain better, survive longer without water, etc.
The difference in the genders only comes into play at a high end level of specific stuff. Like, say, Olympic weightlifting
If Olympic weightlifting is a prominent feature in your game, then you can worry about putting in differences between genders
If its not, then its not 'simulationist' to put it in at that level and is, in fact, sexist.
I incidentally have another way to sort this one out. Its called asking GMs who put stuff like that in to fight a woman of my choosing. The fact I'm picking an MMA fighter to fight them should be irrelevant according to you, right?