While I absolutely do NOT think that this story should be interpreted as a positive portrayal of monarchism in any way, in terms of your comments on generational cultural knowledge I do agree.
That theme specifically as well as the socio-political landscape of the universe are very thoroughly addressed in the manga, which is a masterpiece in its own right. I could not recommend it more, and I think it'll ultimately give you a very different reading of the thematic content.
I loved this movie the first time I saw it, but have had a hard time with it after reading the manga. The movie is only about the first 1/3 of the story, and it feels so incomplete now.
While I do think it's very underrated, I think Princess Mononoke does everything this movie does better.
That's not a very unpopular opinion though, lol
I'd recommend the Manga if you haven't read it yet. It has essentially an entire second half of the story that wasn't in the movie.
Personally I think it is much better than the movie.
Sure, the manga goes way more into detail, but this doesn´t really diminish my enjoyment of the movie and Nausicaä is probably one of my favourite movie characters. I consider them to be sort of two different entities, similar to Akira. Both manga weren´t even finished at the time the movies were released. They are certainly worth reading though and the Nausicaä manga in particular features some of the most gorgeous artwork I have ever seen.
For years now there have been rumours that the movie will get a continuation, but this doesn´t seem very likely to happen anytime soon.
If you liked this film, you should absolutely read the original Nausicaa graphic novel.
The movie which seems like the only Nausicaa people have seen only covers the 1/4 of the manga ran from 1982 to 1994. Miyazaki originally ran it so he can get the studio's approval to make a full feature film. After completing the film adaptation, he returned and just continued his story through the manga.
It is the single best graphic novel I've ever read. The way Hayao Miyazaki created the epic saga full of a rich diverse lore, details, world-building, nature, complex characters, relationships, themes and conflicts is beyond my comprehension. How could he make a story this good? I can't even watch the film after reading it.
The thing is that as you read it, you can see how Miyazaki's world view and attitude were changed from the film, Naussica to Princess Mononoke. At the end, he essentially deconstructed its own film adaptation's the concept of utopia, the chosen one trope and 'the greatness of nature' Miyazaki envisioned by Miyazaki himself.
It is just as good as the stories of Westeros and the Middle Earth. This story needs to be known by more people, or adapted properly in the TV series format so more people can see it.
Miyazaki's most underappreciated IMO. It's always been my favorite. Glad to see people appreciate it.
Fun fact: Patrick Stewart played Picard in Star trek who was stabbed through the heart by a Naussican requiring Picard's artificial heart. He would much later get the role as the swordsman in nausicaä.