Well, MOM can be found in-game, but I want to make a theory on what he and others are up to now that random events are no longer around.
I'd imagine that the Mysterious Old Man is bored out of his mind since he can't really do anything with other players anymore.
He's probably sitting at a bar drinking alcohol all day, and who can really blame him?
I'm not asking for facts, I'm asking for theories on what the random events could be up to now. Since really that would make for more fun discussions.