Interesting, incidentally, how it's always right-wingers who start up their own biased versions of other sites: as well as Parler, a Twitter rip-off. there are at least two Wikipedia rip-offs: Conservipedia, for the hard right, and Metapedia, a pretentiously pseudo-intellectual version for neo-nazis. No doubt there are more - Racebook, maybe? - but no left-wing versions that I know of.