There’s a very high level of trust that goes with letting your social groups collide, especially in the internet age, especially when real names are involved, and especially when people in one social group value their privacy (for whatever reason). The gatekeeper of the social group that uses real names — in this case, the gaming club — has a lot of power.
From my most recent Nerdery Public article: When Social Groups Collide: Trust, Relationships, and Real Names.