That is really interesting. His analysis of which groups voted for Brexit is a little different then the ones we often hear - and, of course, groups form in many ways. It does ring true to the conversations I have managed to have with some leavers too.
I think the analysis needs reading several times and an attempt made to understand. Understanding is the only way the political parties can rescue the situation or, I fear, the very people who didn't count the economics as high as what they believe will be greater self determination, will be the ones who suffer. If the parties do not understand I fear that the lives of those "millions who didn’t think their lives could get much worse" will do just that.
Here is the Brexit coalition of the older haves and the younger (but not young) have-nots: there were clear majorities for leaving the EU among those retired, the unemployed and those not working but looking after the home; and Brexit was backed both by those who own their homes outright, with no mortgage, and those in council homes and other social housing.