If anything, Hitler cemented that fascist rule was a bad thing since he also carried around the baggage of intense racism.
Seems like fascism was reasonably well received by the world of interwar period (at least in the west). Its primarily because they Nazis did a genocide that we associate fascism with "the big bad" in modern times.
I don't doubt that the Weimar Republic was headed to fascism, but if they'd had a more rational leader, it would probably have been a slower/steadier boil that didn't kick off WWII for a few extra years + was more content to rest on its laurels (i.e. content with dividing Poland, taking the Sudetenland, etc) with significant breaks between claims.
I think this all culminates in a more sympathetic looking Germany post WWII (if it even becomes a World War), which then changes the dynamic of modern Neo-Nazi movements (probably less racist, less overlap with confederate sympathizer movements, more political reformation focused).
Idk, its interesting to think about.