Yeah, I muddled my way through his video, and what I saw was the sort of spin we used to see from the tobacco industry.
For one, claims aren't being made based on some years-old study - they're being made based on the actual energy use we're observing right now. Novel studies with new data are coming out every other day that reinforce these points. Even when arguing against that one study, he was only arguing against himself - his argument was that crypto's climate impact wasn't as bad as predicted because people stopped using it and the boom collapsed. IE, crypto energy consumption is acceptable so long as no one uses it, and that's why everyone should use it. This stuff is intended to persuade people who aren't going to think too hard about it.