I've always thought it because they hate themselves and therefore must hate all of mankind. As they are also of low mentality, their hate turns t those different. The most amazing, IMO, of modern (pro)regressivism is the double think of their followers. For instance, (pro)regressives diversity is the thing but only if all think alike. jump off that plantation and now epitaph is sacred. If a band of misfits makes a religion than all those rules must be adhered to except freedom of thought.
For DUrkers, Hitler was a disciple of Wilson and his progressvism.