if someone goes to libera and registers a bunch of channels and tells people to go to freenode, how would they respond? or if popular subreddits were shut down by their respective mods, you'd can be sure that the ops would come in an open it up again. I bet it would take less than a minute to get banned for bring up freenode on libera. if people want to leave freenode they should do that, its pretty rude to expect them to leave your abandoned channel as a memoral to your departure.