We took a trip through decades of the genre and came up with a list of the most important and best hard science fiction movies of all time. They are the essence and the foundations of the book of sci-fi rules that’s still being written as we, the audience, become much more self-aware of our relationship with technology, the future, and whatever those two will bring.
I’m with you on the first part, but the fact that the whole conclusion to the story - the solution to the mystery - ends up being as close to fantasy as to SF to me makes it not a hard SF film. But we’re talking about terms for things that exist on a spectrum, not crisply defined black and white. I don’t begrudge your take on it, I just feel differently.