It could also be it's just really good sci-fi, and the author thought he could find a broader audience in the West.
In any case, I liked the second of the three books the most compelling, and it had the most interesting ideas, as I recall.
Both can be true, it wouldn't be effective propaganda if it wasn't good. I mostly question what appears to me to be manufactured publicity.
I'm curious where you see manufactured publicity. I learned about it years ago from a page on the Atomic Rockets website talking about proposed answers to the Fermi Paradox (yes I'm a big 🤓). No one I've talked to about it had heard of it before.
It recently got attention because of the Netflix adaptation (which was pretty good), but it was rather obscure for years before that.
Just a feeling. Obama + Netflix