Well, I would welcome said admin on the glorious Fediverse and ask how the last few weeks must have been. No need to act like a rabid redditor. We must be better. (Then watch the admin burst into tears, because that was their first friendly human interaction in years)
I'm glad that you are one of those who isn't revenge hungry. I was concerned that if they introduced themselves, the mods everywhere would ban them in an act of revenge.