This man is stupid. His IQ cannot be above 130.
The inference here is that amateurs are somehow better then professionals? or that evidence equating to N=1 is reliable? that is to say, one amateur boat being of more sound then a professional ship says nothing about Amateurs vs professionals, it says something about those specific amateurs and professionals.
Besides that, the Titantic was not sunken because of a design flaw, it hit an iceberg, it was not as if the professionals made a mistake, again that would be on the captain, his analogy makes no sense in the first place.
Despite that he is using a myth which is factually impossible (one man building a wooden ship of that size can not happen), in which the "amateur" is near superhuman and his works completely unverifiable.
The last fucking point regarding this moron, is that he himself is contradictory to his rhetoric. He is a professional neurosurgeon, would he suggest amateur neurosurgeons begin working alongside him? After all, amateurs built the ark right Ben?