Everyone knows that you don't teach relativity or quantum mechanics in primary school. Similarly, "XX => female" and "XY => male" is fine up until college or university - but it's only a generalisation /10

The exceptions are only relevant when talking about trans or intersex people, just as relativity is only relevant on the cosmic scale.

People don't need psychiatric help with relativity. So why should they need it if they find their sex is different from their genetics. /11

Intersex people exist. Trans people exist. They are unusual, so trying to apply the usual approximations is like applying Newton's laws to things moving near the speed of light. Legislating such things is as insane as legally ruling that Pi=3 (which also happened) 12/12