> Yes, having a Nobel Prize in economics doesn't make him right every time.

Yep, he proved that several times when he wrote about the imaginary Euro crisis.

His incentive is his reputation among peers.

Which would be damaged if he were wrong. So his motivation is to be right, not to dismiss BitCoin.

If you turn out to be wrong, along with everyone else in your cohort, that's okay (you can't win them all). It's being wrong, while going against the majority of your peers that gets you laughed at.