What kind of nutcase parents allow a kindergartner-age kid to "gender transition" anyway? At that age I didn't even know what made girls differernt from boys, except that girls (mostly) wore dresses and boys didn't. But my kindergarten and grammar school class had a few tomboy-type girls who were just as likely to wear jeans as they were to wear skirts -- but they didn't proclaim themselves to be "males," they were just girls who liked to play softball and football.
There's something radically wrong with parents allowing (and even encouraging) a kid of that age to believe he/she/it is anything other than what he or she was born as. And there's something equally wrong with a school ssystem that allows and supports such idiocy at such a young age. There's plenty of time to allow the kid to engage in gender confusion when he/she/it reaches puberty. They don't need to have it forced on them in kindergarten.