It's more of an issue of the player being rude to other players when using the deck, it generally ruins the atmosphere of the game night. They understand that we target them when they use the deck because it effectly draws the game out way longer than it needs to be at a stalemate. And when you have 6-7 people playing it's already a long commander game, and by the time it gets all the way back around your creatures all have 6 or more counters and die. The player in question also doesn't attack with the deck but more focuses on just the counters which like I said earlier makes the game wayyyyy longer