No the liberals of today are not Fabian socialists. Oh, maybe a few are, but they are just the uninformed dupes. Most of the liberals of today are actually communists, that refer to themselves as progressives. The Fabian socialists went out with Trotsky. The Fabian style liberals are basically just harmless dupes.
I actually had an ancestor who lived in one of those Fabian style communes that were built in the US. I think it was in Tennessee. He was lucky because being one of the earliest settlers at the commune, he was given the job of post master. So when the commune failed, he still had a job.
So, while the left and right might have shifted leftward in the US, especially since we never had a true aristocracy, the shift in Europe was less dramatic. Conservatives or the European right were still for maintenance of the aristocracy, not just the status quo. No one can say that the Nazis wanted a return to the aristocracy.
As a matter of fact, what the Nazis wanted was complete control of the banks and they, like many of the Occupy Wall Street people, identified the Jews with the banks and the Jews were a very handy community organizing tool.
I can. In fact, that was the basis of their entire ideology.
The Aryans in general, and the Germans in particular, were to constitute a racial aristocracy over the rest of humanity.
You are quite correct that they weren't in favor of a return to power of the decayed German princes and aristocrats. Though, interestingly, an unusually high percentage of those princes and aristocrats were enthusiastic Nazis.