Blizzard has done an extremely poor job here with the ranking system, and lack of enforcement to game rules and policy. Players that are repeatedly reported by a large population of players across teams for intentionally throwing matches, and in some cases even botting / cross-team coordination, have no deterrent penalty and are free to ruin the game.
Very disappointing to see how far a former leader and pioneer in the space of online competitive gaming has allowed a community like this to devolve.