mbachur,
why do moderators allow joseph to post?
He has literally dozens of screennames, some of which are “sleepers”, and others with which he posts mild, Torah-true comments to “fly under the radar” until he finds a thread (or person) to ratchet up his game. It can be quite some time before the game becomes evident.
I think speculating about his real-life persona, or what aveiros he is allegedly committing, is out of bounds. Discussing the negative impact on the Coffee Room of specific actions of his in the Coffee Room, or discussing ways to identify or prevent such activity, is fair game.