A bunch of people will probably move to libera.chat, some to Matrix, some won't care at all. Communities may splinter to smaller pieces. As for Freenode, it's n

A bunch of people will probably move to libera.chat, some to Matrix, some won't care at all. Communities may splinter to smaller pieces. As for Freenode, it's not really clear what the new "owner"'s plans are and if they can administer it without the volunteers that left. I guess time will tell.