I understand the impulse; and to be clear, the columnist here shoots past the reasonable by a fair margin, more than once..........
However....... I agree with
@kEiThZ here.
Just because, in this case, the messenger is problematic and the volume turned up a bit high.........doesn't mean the underlying issue doesn't have traction with a lot of voters.
Clearly the column is infused with some measure of partisan vitriol and is immoderate.......
But the loud, obnoxious voice speaks for a larger group, and one that isn't just white nationalists or capital-C conservative dilettantes.
Its people alarmed to see conflicts from back home, or their parents home migrating to Canada, and doing so at the scale of armed violence at times.
Its also people of all backgrounds getting an allergic reaction to their school board cancelling Halloween celebrations because its also Diwali, because many of the South Asian kids like Halloween too.
There is a need to be a bit more conscious of identity politics run amok and curb the worst excesses, before a plurality of voters lose their minds over this stuff and vote in some nut case who will swing the pendulum the other direction, way too far.