I hadn't made this connection, but I believe it was a relatively open secret. Steem is not a community in which secrets are easy to keep. In any case, I think a person familiar with this connection (one of the witnesses) had told me on chat like it was no big deal.

As for @yougotflagged, this seemed like an obvious one. Surely @berniesanders would have been in the top 5 of possible owners of that one, merely upon seeing the name.