I haven't been on the server in a couple of days because of my midterms so I don't know what you're talking about. The taking a slot part I find funny because most of the time there are 4-5 actual players on a team and if a player doesn't play, a bot takes its place. More or less of the time the bot stands in his place and is utterly useless. So I don't think that guy talking and chatting will cause an "imbalance" in the game.
Also, are these people not part of your "clan" ?? You must have a discord or something to talk to each other.
I still don't get the logic behind putting on the same tags and not knowing who your fellow "members" are. It's like running a store and saying "whoever wears a red shirt works here" no name tag no nothing, just wear a red shirt. Makes no sense.