I’m no fonder of his smug, libertarian prepper ass than you are, but personally the best way to make him feel the consequences of his actions is to leave that baggage where it is to rot and just concentrate on making Lemmy and any other alternatives you may be on the kind of community that Reddit used to be and people valued.
They wouldn’t let me onto Beehaw with the answer I gave to their question, so I joined the first instance I could find that looked interesting. Now I kind of feel awkward making any new communities that aren’t Star Trek related lol.