The article lists an order some 10 of Nobel prize-winners later seen as "unsound" mostly in a field other than their main area of expertise. Making them 1 in 100. I won't be surprised that 1 in 100 senior scientist expresses unorthodox or even unsound ideas when foraging far away from their field, particularly on the kind of topics listed.

I agree that the share of unorthodox thinkers should all in all be higher among those winners. This is indeed what made them advanced in their field. But the main bias remains: looking at those whose voice reaches even when they venture out of their field rather than the full pull of (good) scientists.