I get the impression I'm not alone and a whole lot of people who enjoy good writing that may or may not be science fiction just wish she'd accept it and move on.
Also, it's been a long time since I've seen science fiction and sci-fi jumbled together as a single genre.
I don't think anyone here even thought of her work as science fiction back then.
The 1961 Hugo Award was given to Rogue Moon by Algis Budrys, a work about the discovery of an alien artifact on the moon. The only women in this book are vapid arm candy for the bold, intrepid male explorers.
From https://en.wikipedia.org/wiki/Rogue_Moon
>> Claire Pack, Barker's girlfriend, who flirts with both Hawks and Connington but knows she prefers the manliness of Barker. She has some sort of sado-masochistic bond with Barker; even when he hits her face in public, she says without irony, "Isn't he grand? Isn't he a man?"
This kind of treatment is pretty much par for the course in popular science fiction of the time. Bold, violent men riding around in spaceships and shooting rayguns at hostile aliens to save giggling, helpless women.
As long as you don't disparage a particular genre, it's an entertaining and thought provoking distinction, especially when you get right out on the line. For instance, the episode of Black Mirror "Nosedive" gets right out on that line. There isn't much technology that doesn't already exist, they've just gone a little farther with it in terms of electric cars. Then you could go in the other direction - all fiction is speculative to some extent, so when does it cross the line? I'd say it happens when you need to situate yourself to the rules of a very different world, in a broad sense, but very hard to say...
The Handmaid's Tale feels like science fiction to me, probably because it's in a vague future date. But I'm having trouble thinking of anything technology oriented that would have to exist and doesn't already.
When I look at Australia, a commonwealth nation that's similar in some ways, but with a much more developed domestic media industry I very much feel like a vassal state of US culture.