Whoever decided that a logo should be standardised as Unicode? That is the worst criterion for picking a symbol that has and will have hundreds of other uses than inline text. If it's so important — work to have the current, pentacle fediverse symbol included in Unicode.
Registering a domain to introduce your dumb idea with a lot of empty bravado leaves you with ... an annual bill and a dumb idea. The pentacle symbol is so much more recognisable.