I very much dislike it obviously, and I’m happy that one shut down. There have been others, but for the most part they’ve stayed away from Lemmy as “that software made by tankies.”
Outside of making sure that we don’t platform them anywhere, there isn’t much we can do. Lemmy is open-source software after all, and a tool can be used for good or ill. As @CannotSleep420 mentioned, coordinating on adding them to our blocklists and isolating them is the best option.