This is not the only reply from him in the thread going back to the top comment. There are other articles and papers posted, in response to his reply or backing the assertions of the original post he replied to, here and throughout the rest of the rest of the comment section. In none of his posts did he provide any response to them beyond his appeals to authority.
I had no desire to reply to multiple posts with the same general concern and instead picked a single one.
The top post should have included sources for their assertion. They did not. Others stepped in for them and did in the thread. Other threads include articles and sources for the same assertions. At that point, the burden of proof isn't on them - someone saying they're wrong needs to provide details on why that is not the case vs. just saying "I got a PhD in this so trust me."
It's a classic appeal to authority fallacy.