Not entirely. It should inspire people to push for legislation that requires cloud providers to host protected speech, provided someone is paying the bill.
This is correct. The vast majority of KiwiFarm's content (aside from vulgar replies) is the obsessive compilation of public posts, e.g. screenshots of deleted tweets. It's protected because the right to be forgotten isn't recognized in American law.
I'm not sure KF would be considered protected speech, even in the USA.