That is a more comfortable theory than non-binary peeps being permanently junkless.It seems strange to me that none of the commentators before me have noticed that what this appears to be about is the changes that happen to our bodies during puberty. Pre-puberty male and female bodies are astonishingly similar, which is probably why different clothes, hair lengths and gender roles are encouraged or insisted upon us. Post puberty is a different matter, we're now fully functional adults and are expected to continue the species.
There are people on puberty blockers in real life, dunno what they end up looking like though.The question being asked is what would happen if instead of going through puberty you just got older? Which it has to be said is a good question.