Good morning.
The deserter buff is needed. You said you have been playing since 2004? Then you should remember the nightmare of the dungeon finder back in Wrath. Join the queue, get Occulus, tank sits at the zone in and refuses to move while spamming “kick me.” Or the people that would afk at the zone in to get free experience and not care if they got kicked because they would just immediately requeue and do the same thing to a new group.
When you sign up for an automated system to find a group then you also have to deal with the automated system’s way of handling people that try to game the system. No, it’s not a perfect system but it’s the best system. If you’re honest with yourself, how many times have you been in the dungeon finder and how many have you been kicked? Hundreds of dungeons and maybe been kicked a handful of times? It’s not common.
As for your brother… come on dude. Five times? He was kicked five times? You’re not going to convince anyone that he was only “going too slow” unless you tell us he was RP walking through the dungeons. There are a lot of people that don’t like the “go go go” tanks and it’s hard to believe you found five groups worth of people that do to the point they’re going to kick a tank that’s supposedly doing nothing wrong other than going too slow.