Just do it. It doesn't need explained. The stats of your game's matches and players will do all of the explaining.
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it's forcing a 50% w/l in the weirdest way possible. if you win a match, you have to lose one for every win, so it'll either give you people that the game knows will be inactive or leave. if you're still doing good, you'll be put in a losing match with 10 seconds left, to make sure you lose.