But what is the circumstantial evidence here ? The argument essentially boils down to: "this guy cheated in the past, so I don't trust that he won't cheat in th

But what is the circumstantial evidence here ? The argument essentially boils down to: "this guy cheated in the past, so I don't trust that he won't cheat in the future". This is fair: he should decide whom he wants to play with, but no proof was actually presented.