I think many of us find it very easy to dismiss all Reform voters as racist, voting on the single issue of few too many darkies. Of course, some are, and that core group won't give a shit about this.
But a LOT of their support swelled from an abandoned working class. There was a great article in the Guardian this morning about workers who have lost good, generational jobs in industrial towns and have failed to find new work. They feel abandoned by Labour, and many of them saw Reform as a working-class party that was distinct from Starmer's Labour and could bring back those jobs and the pride.
Seeing Nige and Reform taking bungs while sipping on champers and eating Oysters will really cut deep with these people. Burnham laying into Thatcherism is smart, and if he can deliver on improving these places as he says, it'll be the end of Farage.