Who remembers Matthew's 10k BTC bet?
Well, by the "wording" of his bet one can argue that he did nothing wrong, and his scammer tag is not justified.
I agree with your conclusion that they should not be allowed to weasel out of the bet, just like MNW wasn't. But let's not go overboard. MNW's bet was not worded ahead of time to let him out of it, he looked like an utter fool for trying to argue that he had "left himself an out."