You're hardly talking about the concept of compromise, are you? That's a filthy, rotten and dated word these days ... apparently!
It's fascinating that this has managed to get to 76 pages. My daughter has probably played against and could even still be playing against mtf. I neither know nor care. I've never asked her, and never will. As a late developer, she's played against kids that were 6-8 inches taller (& more) and 40 lbs heavier, with the speed and strength to match for a few years - what's the difference now!
If they are the studs people think they are, then that should only bring her on - we do hear that "steel sharpens steel" analogy for why we need elite leagues and what not. The best players want to challenge themselves every day to get better, or so I thought anyway.
But that's not the point. I get what you're saying, but you're nonchalant because it's just scratching the surface. Wait until it becomes common. Wait until biological males take opportunities away from real females. There's a reason we've had separate leagues, isn't there? How do you justify "sharpen the steel" as if the need for 2 leagues was just some random consideration that wasn't ever necessary? The best female players, that wanted to challenge themselves every day, got their asses kicked by a bunch of 15-year old boys. There's a reason for that. We have different clothes. Different bathrooms and locker rooms. Different medical care. Different 'traditional' professions. This need to accommodate everyone is fine... but at some point you say "fuck no, we're not going to stop calling it Mother's Day because some man that wants to breastfeed is offended." That's ridiculous.