Take 1984. It reads like a thought experiment reflecting the author's deepest fears about the dangers of unchecked power structures. Allegedly, Orwell’s own son would have been around 40 years old in the year 1984 (I read so in Pynchon's introduction to this book in Penguin's edition. It was a great essay.)
But, 1984 also features a great protagonist and an absolutely haunting language. While many of the other characters mainly serve to convey the broader ideas, it’s him who grounds the story emotionally. His suffering, his moral collapse, and the eventual loss of his ability was so tough to read and will forever haunt me. When he breaks, it feels like a loss for all of humanity. But, what I mean is characters are not essential to make a great work. When Orwell wants to convey his ideas, the characters are sidelined and ideas take the front wheel.
I understand your perspective. I'm not a fan of many of the episodes either. I really liked the first season, but the ones that followed just didn’t live up to it. And it does not rise above a horror centered around some particular technology. But, it's them give it cultural relevance.