For those getting banned, I would wager a guess that you did it more than once, figured it out and proceeded to continue to abuse the mechanic in game. I am 100% positive WotC pulled the logs of the people that were banned, saw that they were doing this action on multiple occasions, and offered them a 5 day vacation from the game.
Let's be honest, most people who have the cats have clicked fast a few times and gone about their game, not causing disconnects and not been banned. I know I have done that.
This. We ran the numbers. If you clicked on the cat an insane amount of times in a match multiple times, you got a suspension. It wasn't a matter of just clicking the cat a few times... Or even a few hundred times a match... It was far, far more than that.
As I tell everyone who gets banned/suspended and finds it unfair, you can reply to the original email to contest it.