Not crazy at all imo. I've only read the first book and I don't plan on reading the rest. I found it interesting for the mainland Chinese societal influences that were sometimes explicit, but often just peeking through. It's obvious that the writer is from a different background as scifi authors that grew up in a western country. But the character writing and scifi aspects, were only kinda meh imo.

I had also read someone recommending the books as hard scifi and I can't agree with that either. The three body star system is a very interesting premise, but the godlike single proton that can envelop a planet is pure fantasy. Too much deus ex machina for good world building.