All I ever saw or heard before was "Come to our TEST Discord and say Hello!"
When I did, everything was locked out cept for 1 guy in an unlocked Destiny 2 channel with 2 unlocked channels for grouping under him, and everyone else in a single locked out channel so I assumed this was done for spam reasons due to sheer Org numbers and closed Discord.
I did wonder why an Org with over 15k ppl in it only had about 12 ppl idling in main channel lol. Most people probably didn't know they needed to PM a mod, closed Discord and left it at that.
If discord allows for a mod to have a doppleganger client in a second channel, we used to use that in teamspeak so mods can idle in multiple channels, and would hear anyone joining the pub channel needing access to restricted/match or raid channels etc