I hope that Tournament Directors will be more attentive to players acting out. If there is one thing that drives away new tournament players more than anything else, it's when a good player storms off cursing and pouting.
Because I focus a lot on recruiting new players into tournaments, I always notice how terrible it looks when a player throws a tantrum, especially when s/he is far ahead anyway. Poor sportsmanship. Experienced players will just roll their eyes behind the player's back, but new players simply don't come back next time.
Because I travel a lot for tournaments, I notice that there is significant regional variation in how much misbehavior TDs tolerate. Some areas are quite restrictive of behavior. (The Scandinavians fine players for swearing, I found out.) But other places allow all sorts of bad behavior, and even rage tilting barely gets a warning.
That's not to say that I myself don't get angry. It takes work to keep emotions under control, especially after the third house ball in a row. But I always try to remind myself to "Belsito" my reactions. It's just pinball, after all.