I think many are registering nicks and channels "just in case", I haven't seen true "migration" as of yet, meaning large public channels forcibly shutting down on Freenode.
Let the storm calm down and then we will see where we're at. The whole conflict seems to be opinionated ops clashing over governance rather than any serious privacy related issues imo. It still might bring Freenode down in the end, who knows, but I don't think panic is warranted.