One of the reasons why the Patriots enjoyed so much success was because they were ruthless. Belichick and Brady did everything that it took to win even if they broke the rules. Multiple scandals including Deflategate directly implicated Brady. However, nothing has tarnished Mahomes’ wins.
There’s no evidence to suggest the Chiefs cheated during their runs to the Super Bowl in 2019 or 2022. They outperformed everybody in the AFC and won by merit. Some people hate them because they’re successful but they don’t stimulate the same inherent loathing of the 2010s Patriots (via Sporting News).