Because a specific group of populists 'lost', but populism still works and will continue to work wherever there is people in dire situations.
The more dire your situation is, the more you need a solution. And then someone telling you "it's the fault of those other people", that just offers up a real straightforward supposed solution.
Even if it's pretty clear that it cannot possibly actually solve the real problem, the prospect of a mild improvement will have many going along and ignoring morals.
This is what is tho... There people who are directly at fault. The issue who is who fascist blame and how they won't ever name their daddies is part of the problem... When in reality owner class pushing this shit are the ones causing the dire circumstances for the working class to begin with.
It is a clever tactic and has proven very effective at manipulating men with fragile egos.
Funny enough, fake news will never call out anything that would endanger economic interests of the owner class. Why would anyone take these clowns seriously?