The threat from strasserism/"economically radically but socially conservative"/what you liberals call "red-brown fascism" is not that it will win, because even if it does, it's a wholly unsustainable political formulation. It works by trying to be everything to everyone who is pissed off, but there's no policy or platform that functions there. It's a grand illusion.
The problem is that when it does collapse, what is left, is always the fascism, and never the "economic left." Always. Ask history