If I am to imagine LoGH as a fully libbed up glorification of papa fascism, in the style of plenty of other political operas of its type, even then it's an honest depiction of a common liberal mindset which is revealing and compelling in its own way. That's how I originally viewed the show: liberal in its ideology but diligent and committed enough to a historical "realism" that it depicts all of the failings and structural conflicts of that ideology, all while adopting that Three Kingdoms-styled "ever onward is the march of history" narrative voice so that it can critique itself while not having to reconcile what it's actually saying about itself.

But if the writer is as lefty as you are saying, then it becomes a piece of seriously crunchy drama analysing the false choice between liberalism and fascism, which sounds more believable coming from a Japanese writer the more I think about it. A Japanese writer, I imagine, would have to be pretty cryptic about how they present leftist ideology, considering the political status of Japan. Miyazaki did that, so now I'm hopeful LoGH is part of that too