>>344237361
It’s anti FOMO. For those who might be tempted to join a discord that will eventually suck them out of the thread, it’s a list of people who are posting and actively using the thread.
A social proof that there are people like you too who will just stay in the thread and post there.
On top of that there is the utility of easily contacting anons you meet in VRchat as it is maintained as exact username parity. You can browse their name in vrc website and find it.

Don’t get me wrong though. There are anons who still won’t join a non-posting discord and that’s alright. It’s a place to belong to as a proof of participation as a lot of people require this feeling for better or for worse.

The previous single maincord ran amuck because they had the “numbers” to back up their legitimacy. And is why you are seeing this godawful discord wars right now vying to become the next “maincord”.
But anon is wising up. And no one will fall for that trap anymore. Let the era of the thread begin in proper.