If he didn't really believe what he was saying, he wouldn't have bet such a large amount of money on it. There is no reason to believe he is lying. Whether he i

If he didn't really believe what he was saying, he wouldn't have bet such a large amount of money on it. There is no reason to believe he is lying. Whether he is correct is another matter, but he's not "working for/against" anything, he's just stating his actual opinion.