The issue here is that people have no problem admitting that tall individuals have an advantage over shorter ones in basketball - but when someone points out that trans women may have an advantage over biological women in terms of strength and speed, those same people suddenly come out of the woodwork, calling it a lie or transphobia.
If instead they acknowledged the advantage but still argued for inclusion, then at least we’d be agreeing on the facts - and the discussion could focus on how to level the playing field. Blanket bans are rarely the optimal solution, but neither is a free-for-all.
Here's almost 600 examples.