Is the discussion still about sports? I think there’s less of a concern on the part of men’s sports because trans men would be at a disadvantage (assuming we’re talking about a sport heavily dependent upon size and strength), similar to women competing in men’s sports (football, hockey, rugby, etc). This is probably less an issue in weight class sports and none at all in a non-competitive setting.

Assuming that someone isn’t biased, the “rights of women” is an odd turn of phrase. there probably is a competitive advantage for say a high school or college trans woman, and such advantages means success over or lost scholarships. Perhaps that’s what the poster meant?