Quantum Coins. seriously. they're easy enough to predict if you accept many worlds.
as for the rest... entertainment? Could be a case of "even though I can predict these humans so well, it's fascinating as to just how many of them two-box no matter how obvious i make it."
It's not impossible-we know that we exist, it is not impossible that some race resembling our own figured out a sufficient solution to the lob problem and became a race of omegas...