It's an interesting piece but it misses the point that in 2016, Brexit was sold to poorer Brits as a way of SAVING money - stop sending money to the EU and we can fix the NHS, get jobs for our people, etc. This idea that we voted to be poorer is a much more recent invention.
Gary Younge on poor Brexiteers
https://www.theguardian.com/commentisfree/2019/feb/01/poorer-brexiters-worse-off-working-class-leavers