Why should trans women be excluded for being above average but other women who are above average shouldn’t be?
Because by nature of their transition, they don’t fit in a single cleanly defined category. We should just change the definition to say: Those with XX chromosomal pairs. Because you can’t change those. Nice and simple. Anyone with double-X chromosomes, good deal. Anyone with XY - goes into the “open” category - which is by default, the ones usually with mostly men in them.