First, I do think it's ridiculous that he takes it as a given that Oligarchs favour climate policy. Yes, I can see how someone can point to Musk and .... I dunno Al Gore? and try to make the point, but for every Musk-a-like, there are many dozens of rich people very deeply vested in the fossil industry. I don't think any serious survey of the financial interests of the global superrich will support this view.
Second, while he alludes to the lack of homeownership amongst the young the fact that the single biggest cost-of-living expense (and it's incredible growth during the last decade) is large controlled by his embattled "yeomanry" gets ignored. It very much complicates his story to realize that his supposed victims are in fact profiting handsomely and generally cause much pain to the supposedly superior "clerisy". Just think of the typical academic renting from an older person in any large city today and you get a good sense of how wrong his story is.