This player's comment seems to be implying that Outside (or one of the mini-games) is not a game. How does that make any sense? What does it mean?

Yeah, I think they might be part of a guild or something? I generally don't mind it, as long as they don't start griefing players who don't want to join that guild. I know every multiplayer game has griefers, but I just feel really weary when it happens in a game where I've put so many hours into, and where all my friends are.