Populist doesn't always mean working class, but it certainly can.
www.dictionary.com/browse/populism
Some of the recent arguments insisting that only the "educated" should vote, or that people should have to pass a test on the "facts" (whose facts?) are clearly divisive.
The remain side had their own ways of misleading people, which have been discussed a lot on other threads.
I find it concerning the extent to which some people are trying to redefine democracy.
True democracy is exercised by the people or their representatives. Not one step removed, i.e. commissioners chosen by those we elect. And not removing votes from those who vote for inconvenient things (I heard someone on the radio yesterday saying that older people should have 1 vote whereas young people should have 1.5 votes)!