I grew up outside of the US and learnt that the Wright Brothers invented the airplane, but I don't really care for the cockroach speech. Unless you're a defense lawyer trying to get a guilty client off by casting doubt on one of many pieces of evidence, just point out the mistake and let other people judge for themselves whether it's bad enough to ignore the rest of the article.
Haha, certainly, if you're willing to go take a Flat Earther at his word on everything but the Earth, you're welcome to. For me, a sufficiently nonsensical claim casts doubt on all relaying of source material. And I arrogate to myself the right to judge all other men. All Rights Reserved as the news media say.
The rice made by Flat Earthers is full of cockroaches. Though you do present a compelling proposition which I will entertain. For the right sum, I am willing to point out mistakes and withhold opinion - leaving that to the rest of you to have. I'll go with my rate on the usual experts platforms: for $1200/hour I will tell you when people are claiming the Earth is Flat and I will make no other judgment of their epistemics.