I don’t think kids are being called bigots for not being trans.
Kids socialize online en masse. Minecraft. Roblox. Other spaces. They form factions. gays. Furries, trans. neonazi, military. jokers and pranksters. They create avatars, fictional personas they live as in these games. They try new personalities on for size all of the time.
My opinion and yours is a fun way to kill time arguing online about. But outside of our own kids or nieces/nes/grandkids/cousins/etc and maybe a neighbor or two, their upbringings are up to other people.