Elledge is a passionate Remainian, so I detect a whiff of 'these are things foolish Leave voters did not know' about that article.

I think there's a population and investment factor not really covered here though : I think a lot of Leave voters did know that London paid more tax, because they know that London is a hell of a lot more prosperous than they are and is always at the front of the queue. And that's what they didn't like (I am judging from a basis of a small sample of remote relatives here, so not exactly scientific. But I can 'reckon' stuff with the best of them! :-D