While I was watching the tournament marathon this weekend (Eternal Champs and BoM), I noticed many many "mistakes".
Players
-trying to respond to trigger, they cant (Orchard in resp to Oath)
-drawing 3 cards with BS, putting none back
-using sick creatures (not only in the finals)

and many more.
(Paper)Magic has become or always was a game of cheating.

Bertoncini was a good mentor it seems


The rules need to be a lot more strict. If a player produces a gamestate error or is trying to resolve illegal actions, he should get a gameloss.
If youre playing on high level tournaments, you should know and follow the rules and keep track on the game. It might not be always cheating, but
all those rewinds are stupid, in what sport you can rewind your mistakes? They didnt even get warnings for this.

"Sry I scored an own goal, I didnt know it was the wrong one" - "No problem, we take it back"

I can remember, back in the day, we didnt even allow to untap lands and got mana burn then.