He missed the more obvious historical mistake to highlight. The notion of "canals" on Mars was directly attributable to an ambiguous translation of the Italian

He missed the more obvious historical mistake to highlight. The notion of "canals" on Mars was directly attributable to an ambiguous translation of the Italian word "canale" which was intended to just mean "channel" without the connotation of having been fabricated. English speakers who read the mistranslated work of an Italian astronomer got worked up over nothing. It's exactly the kind of subtlety that AI tends to miss, but I'm betting the current generation of GPT tools wouldn't make that kind of mistake.