I like this, from Chris Grey's blog, flagged up by PippaZ above. I think it explains a lot, Galaxy
^Several factors lie behind this Brexiter need for affirmation. It is in part an insecurity, based perhaps on a lurking knowledge that what they have brought about is so damaging. Related to that, for some it is ‘remainer negativity’ which is the cause of any damage or, at least, which has soured what was supposed to be a moment of triumph. A stronger version of that is, to the extent that Brexiters believe themselves to have been a ‘resistance’
movement that has enacted a national liberation, they expected the whole of the country to welcome it, and are genuinely bemused that at least half the country does no such thing. And at least for some of the most vociferous Brexiters that links to a populist authoritarianism, in which opponents are derided as traitors and saboteurs.^
chrisgreybrexitblog.blogspot.com/2021/