I'm not picking on Dr. Bohren in particular, this same statement is also made by several other authors. The story of Arrhenius could be cast in such a way that he was a hero and his foot-dragging detractors were villains. I must say, however, that I am not opposed to scientific conservatism. Every now and then a rare genius turns out to have had a good idea despite initial resistance to it. A manifestly faulty syllogism, but one widely appealed to nevertheless.
Skeptics say so.
Over and over again the skeptical researcher makes the assertion that, if in view of current knowledge, a new theory or observation appears crazy or impossible, therefor it must be crazy or impossible, and therefor it can be dismissed out of hand. But wait a minute. But this interpretation is wrong. This was mis-heard. It is not what the unorthodox researchers are trying to say.