Anteaterking posted... This isn't the first (or probably last) time that WotC has banned/suspended someone for propagating leaked information even if that person wasn't the source of the leak.
The basis for "This is unfair to tournament integrity that they were told two weeks ahead of time!" about a format change to the most common tournament format is unfounded. Standard is fluid enough (especially since everyone knew bans were imminent) that additional time to prepare that far out isn't even worthwhile. I would even say that would be true even if they had switched to an obscure format but ymmv.
It was brought up in the video, so I didn't want to parrot it, but becoming familiar with how MTGA works is also a consideration. You have to put holds/stops on phases ahead of time, and can't just declare things. Additionally, not every MTG tourney player is going to have a computer that can run MTGA, so as much advance notice as possible should have been given once they decided on a course of action.