Or, realistically, accept that replays mean nothing. A game where your teammates were at a significant disadvantage doesn’t mean it was rigged, it could just as easily have been luck causing the same teammates.
Without Blizzard’s word, it’s very hard to prove or disprove to an acceptable standard. This is why I like edge cases, they are more likely to highlight disparity. I made a theory based on the fact that bronze to GM climbers still have equal SR games despite clearly having higher MMR as they are winning huge amounts of SR each game.