It's possible that the announcement hasn't reached the banned accounts yet, or they've already moved on to their alts and are doing well there. They may want to avoid coming into the spotlight again to prevent potential exposure of their other accounts, much like the case of
naim027, where his unban news exposed him.
It is possible that users are avoiding getting trolled by some of the attackers on this thread, so they selected the email route, which is less troll-prone and easier for them. I don't think anyone will use this thread honestly; it's already turning into a spambot, and so many applications will be buried in no time. .