> They (and I) have issue with it when its used in a debate to say "Humans are sexually dimorphic (and therefore trans and intersex people are irrelevant/shouldn't be accommodated/don't exist)".

But that is not being said here, just as in every other time the discussion of sex segregation in sports comes up; and just as in every other time, people simply pretend in bad faith that such things are being asserted.

> I agree that humans are bipedal, but that has no bearing on the fact that the Olympic committee should take great care to create rules and categories for paralympic athletes.

Sure. Which is why they do, and nobody has a problem with it.

Go take a survey of the people opposed to transgender women competing in women's Olympic sports, and see what they think of having a separate category for transgender athletes. Or even separate categories for transgender men and transgender women. I'd wager the large majority have no problem with that. (They might at most be concerned about disproportionate airtime being given to sport events that relatively few people qualify for and relatively few people are especially interested in.)