You can call me Oni~
If you're an active Internet user, trying to keep everything on every profile for every site up to date is a sure way to become crazy - it's understandable that many people don't consider changing e-mail on some furry website all that important, since the only advantage it gives is to restore the password you know too well to forget, and occasionally receive some useless update news you don't need. It's totally Furaffinity's fault for not stating the importance of changing the mail before force resetting every password without any warning - in fact, even a simple "guys, re-check your mail, or y'all lose your accounts soon, duh" message would do. It should be a freaking common sense on side of FA's staff (or any social network staff for that matter), and with all my respect to their hard work and willingness to resolve the issue, let's be honest and objective - they kinda screwed up on that one.
Actually they did give a warning. They had the warning up all week, since the site first came back up, advising people to change their emails and passwords since the hackers may have access to them. Later on, right before they set it to ROM, they confirmed that the hackers did in fact have access to our passwords and emails and told people they needed to reset them before deciding a 'force reset' was needed.
It was where it now says 'administer notice' on FA