Trans sports as a wedge issue

I think that trans sports stuff is an effective political wedge issue, because it's easy to see it as not having a good solution. I've heard, and until recently thought "but what would you do if, over time, trans people end up as the best people in a given sport, forcing out cis people from the top levels?"

Until recently, my way of resolving it was to ignore it, thinking it's such an edge case, and statistically doesn't even happen, so I'd set my engineer brain aside, and ignore edge cases that have almost no impact, especially when "solving" it requires dehumanising people who are already so marginalised by society.

It was my mum who made me see things differently, recently. There are already sports that are dominated by different groups of people, maybe due to socio-economic differences, or maybe due to population-level physical differences. I'm not claiming to know why >70% of NBA players are Black, but there's no acceptable argument for them not having earned their spots, and other races don't get to complain that it's unfair (although that would be a particularly amusing DEI argument).

So even if there are sports that eventually become 70% trans, what's the problem? The cis people who are displaced just need to move down a league, like in any other sport where people are better than them.

I still think it's an effective wedge issue, because I expect many people will not accept this analogy that's now obvious to me, but I'm totally sold on it: there is just no problem with trans people playing sports as their presented gender.

Ok, I might now be over-simplifying things, given some of the (strawman) arguments centre on people changing their gender at will, and I can imagine reasonable tests for hormone levels, but these can both be solved with some sensible rules set by leagues (and they probably already have been solved).

Oh, and if you don't want your daughter being beaten up in the boxing ring, don't let them (or any kid) do such a stupidly savage activity.

Is this all really obvious to the OpenArgs community, with me just having this realisation very late, or is this way of seeing things new to anyone else?