crockpotcauldron:

dwarven children aren’t assigned genders

once dwarves hit puberty and grow beards, they are free to declare their gender via beard braid pattern

there are a bunch of different well-known patterns, and you can always invent new ones or just leave your beard unbraided

genderfluidity is a thing. all you gotta go is comb out your beard and rebraid, and people will know what pronouns to use