He doesn't have evidence but the originator of what's now known as The Devolution Theory does have evidence which he links.

However, the originator, Patel Patriot, is very scholarly and cautious so he makes it very clear when he is stating a FACT and when he's speculating. I'm grateful for his self discipline.

When I encounter "influencers" who are less disciplined; people who conflate guessing with stating proven, vettable facts, I'm reminded of Qs many warnings, especially when Q became more "mainstream" and began attracting the interest of people who lacked the training found on the chans.