Okay point taken.
If you've played all those games then why didn't you ever discover the MUTE button?
You mean the button when you click "Esc" to go to the main menu and there is a ear with a cross on it that looks like this:

and when clicking it, it brings up a window of players in the game and you can just double click to mute them?
Well, I discovered that a month after playing the game.
But the Mute button doesn't always work for some people because some people don't want to use the mute, they just want the admins to ban them for 1 sound.
That is a reason I don't want this in BL, so players can't use their god damn mics to spam stuff and make other players go like "OMG BANBANBANBAN!"