It appears to apply to crustaceans as wellIt's not unusual for highly educated people with an expertise in one area to have an inflated opinion of how clever they are and to pontificate about subjects they know nothing about. The question you always need to ask when a scientist is being quoted as stating opinions which run contrary to the mass of qualified scientific opinion is whether he is talking about something that is actually in his areas of expertise. If not, then while he may be a clever guy, he's not necessarily any better informed about it than you or I.
I can't begin to count the number of mechanical engineers that I've met who can barely operate a screwdriver, or the number of electrical engineers that I've met whom I wouldn't trust to change a lightbulb. They are experts in something. It doesn't make them experts in everything, including things that you would think are closely related to what they do.