To your first paragraph, we are not in disagreement. Parallels and influences found in particular plot points is not the same thing as the GP's statement that 1984 was based on Stalin. It was not. Read Orwell's letters.

> It's written as a warning of how futile it will be to resist totalitarianism in a future advanced technological state.

You fundamentally misunderstand 1984 and Orwell himself. The notion of the futility of resisting totalitarianism never would have been uttered or thought by Orwell. He absolutely and tirelessly championed resisting totalitarianism. He wrote a great many words on the subject. He never warned anyone of the futility of resistance in his prior works, and he certainly didn't push himself to death to deliver 1984 as such a warning. There is a vast difference between you, the reader, determining that Winston's resistance is futile—particularly in the hindsight of O'Brien's exposé at the end—and suggesting that Orwell was warning the reader that resistance is futile.