You don’t have to play 3 Game Changers for your deck to be in bracket 3. I think the “rules” are more like guard rails. It may be more helpful to consider the bracket descriptions to gauge where your decks fall. Just because your high power optimized deck adheres to the “rules” in bracket 1, doesn’t mean it is a bracket 1 deck. As they wrote, this will not protect you from bad actors.
Edit: This is also answered in the FAQ part of the article:
My best deck has no Game Changers and is technically a Bracket 2 deck. Should I play it there?
You should play where you think you belong based on the descriptions. For example, if your deck has no-holds-barred power despite playing zero Game Changers, then you should play in Bracket 4!
You don’t have to play 3 Game Changers for your deck to be in bracket 3. I think the “rules” are more like guard rails. It may be more helpful to consider the bracket descriptions to gauge where your decks fall. Just because your high power optimized deck adheres to the “rules” in bracket 1, doesn’t mean it is a bracket 1 deck. As they wrote, this will not protect you from bad actors.
Edit: This is also answered in the FAQ part of the article: