I think the author was less interested in describing the ideology from a historical perspective, and more interested in pointing out warning signs that could si

I think the author was less interested in describing the ideology from a historical perspective, and more interested in pointing out warning signs that could signal an ideological movement is trending towards fascism. His point is that a future rise of fascism might not look like the path from the Pan-German League to the Nazis, but it will have some ideological hallmarks that we can detect.