All in all, I still trust ProtonMail, they are handling this quite well and transparently. Their original messaging was probably a compromise between getting the message out there and leaving some room for things like this. Arguably that was a mistake, or maybe with the whole truth in bold on the front page, people would have flocked less to ProtonMail? I still don't agree with that original messaging though, as they don't themselves anymore.
Still pretty great free service if you ask me. If a family plan was cheaper I'd have migrated everyone there a long time ago.