'almost like they have become radicalized.'
That's exactly what it's like with the hardcore Brexiteers. A cult-like devotion to the idea of Brexit, and any actual facts or evidence that they don't like the sound of gets dismissed as 'Project Fear'. It's actually scary, and I don't know how they can be turned around.
I know (I think) four Leavers:
One dithered about for ages in the polling booth and really wasn't sure but went for Leave in the end. He is now mortified and thinks he must have lost his mind that day
My father in law - dyed in the wool Tory, very much in the Brexit cult
My mother in law - has no actual capacity to think for herself. Voted Leave because FIL did so. Openly admits she didn't know what she was doing ('they didnt' explain it to us housewives'
) and regrets her decision
A good friend who is a Tory voter, Daily Mail reader, 'they need us more than we need them', thinks Boris Johnson is marvellous fun and 'a great British eccentric', but not someone I would describe as in any way racist. Voted leave as 'a protest vote' - one of the stupidest things I have ever heard. I no longer talk to her about anything politics-related and that way we get along just fine