Yes - though how intellectual was the model for Germania? I've been very interested in Speer's work, and especially Germania, but this model - which is a museum in Berlin - offers mainly a larger version of what French architects had already worked with. Speer's neoclassical approaches were essentially copies. Not to dismiss Speer as a copy-cat who merely made strucures larger (see also Boullée's Cenotaph for Newton), but that Speer's approaches were not particularly intellectual. One can work as an architect without being an intellectual. Speer had likely seen his work as intellectual, however., per the German context of his profession. That said, Nazi policy was to severely limit academics and intellectuals. For intellectuals like the architects at Bauhause, they were fired or replaced by members of the Nazi party. Fasicsts historically limit and prosecute intellectuals and academics. This is well known. It's also the reason that none of Speer's work borrows from Bauhause lessons, and is instead rather neoclassical.

Regarding Fascism and statecraft, one has to look at three texts by Machiavelli to appreciate the authoritarian origins of Fascism. Perhaps I shouldn't explain here a course on modern statecraft and political thought, which would begin with Machiavelli, and extend to Rousseau, Hegel, Marx and others. The origins of Fascism are Machiavellian (I'm not using an 'evil' connotation here), ragarding the absolute control of the masses, part of which is that the "ends justify the means". This is not an intellectual concept, as it's essentially a renewal of Roman imperial policies.