If I remember the setup correctly, my reasoning is that two boxing is rational,anti-coercive and implementable, while one boxing requires accepting some magical

If I remember the setup correctly, my reasoning is that two boxing is rational,anti-coercive and implementable, while one boxing requires accepting some magical predictor and also opens up the door for a bunch of "arguments" that boil down to magic (violation of causality, or "trust this black box predictor" bro). "Fuck you, I'll not play your game and take 1000" seems like a robust heuristic given a finite time on earth and a lot more charlatans trying to fool you than reliable predictors around