This might be slightly autistic but I just had the greatest idea for a head canon:
In my head, Assigned Male takes place in a world where a six-year-old boy obsessed with transsexuals has the powers of a God. Everyone bends to His will when He's around, saying the right things to make Him feel wise and intelligent defeating his rhetorical opponents, but when He's not they dread the moment they will encounter Him again. They don't care about transsexuals or skirts or cisphobia, they just want to go back to their normal lives, but He won't let them.
He will never let them.