Rohm was right, the truth is many revolutionaries are usually bitter and lost people who can't find their place or function in a mainstream society so they look to a group or an extremist ideology to cling to. At the time in Weimar Germany communism flourished but once it became apparent the Nazis were winning the battles in the streets alot of reds switched sides, it wasn't so much about what the ideology was about but who was going to be the first to tear down the system and replace it with something new. Also the reason Nazism succeeded is it took bits and pieces from every ideology that could appeal to everyone the socialists loved the public works projects and generous benefits and social programs the state pushed, capitalists loved the arms manufacturing projects, and the intellectuals liked the new age paganism core of the party adopted from the Thule society. Also the racial theories compounded world history into the most basic of instinctive biology, to survive or die off, it was something new compared to the stale arguments of Marxism where everything was compounded as class struggle which was far harder to prove as a theory than human Darwinism.