Sounds like that person with a book to sell is a fringe crazy person outside the scientific consensus then, doesn't it? Because climatologists were always very clear that you can't just point at individual weather events as proof or disproof of climate change, because they only study long term trends.

The fact that some academics are now trying to have their cake and eat it is totally unsurprising. There are no standards in that community, COVID proved this beyond doubt. But it's a sword that cuts in both directions. If unusually hot or cold weather is evidence for climate change, then ordinary average days are evidence against. Today I look outside the window and it's a typical September day with no special temperature extremes. By the argument in your link, that must be disproof of climate change, right?