So I keep reading the banter on this and something struck me. I was especially twigged by a post of Anri's. It seems like a pretty minor issue but there has been a lot of talk about it, so here goes. Consider the following:
"Emeriti" essentially means retired but keeping an honorary title from the previous position. So if you're a "professor emeritus" it means that you're not actually a professor anymore but you get to keep the title "professor."
I assume that the reason ASF chose the name Emeriti was because he had several former top players (like himself) who "retired" to his ghetto but retained some honorary title going forward.
So... what titles are they keeping? Well if ASF retired from Rage of Absalom, and dorje retired from Sanctuary of Absalom... doesn't the very name "Emeriti" imply that they are keeping their honorary Absalom titles even though they don't play there anymore? I'd speculate that the reason ASF called it Emeriti in the first place is because it's a collection of former ABS players.
So there you go.
TL;DR "Emeriti" as a kingdom name means, by definition, that the players there keep their former Absalom titles and as such calling them Abs actually makes total sense.
(I think that saying "Absalom was an alliance, Emeriti is not" is an irrelevant distinction for the purposes of everyday dialogue.)