Its just devs doing fun cameos as fanservice and/or advertising. The way a different dev decides to include a cameo in their game is not indicative of whats canon. So just take it for what it is. It is a simple and fun cameo because the devs know each other and are probably friends. There is no deep lore behind it.
The update is going much slower than expected but I trust the dev as he is upholding the quality and no doubt it will be just as good as always. I hope we are getting closer to finding out what the virtual game is really about
I like to think that the "cameos" are just said setting's version of the character, and that they are in no way related to their original counterpart.
Meaning the Alex of the Niichan verse is not the Alex of the Caribdiverse. Same goes with the Moon who's a gym instructor in Kredon, Darci in Mistbury, Falazio in the Andromeda Server, Chang in Ardoria, and Judie in Riverside. They may look the same (and prolly act a little bit of the same), but that's where the similarities end.