This has been tried. Unfortunately enforcement of laws (or rights) has been historically extremely uneven. Ask the Black Panthers.

Yes, Calckey updated and rebranded (?) as FireFish. https://joinfediverse.wiki/What_is_Firefish%3F

It’s even more fun to look up the origins of the name - “hand/armpit of the central one”. E.g. https://en.m.wiktionary.org/wiki/Betelgeuse