Nudniks: SF should teach REAL science, and shouldn’t have unscientific physical laws or technology. Action and adventure destroy the true mission of SF. Killjoys. 1/?
Same for anything extraordinary. Strictly plausible events at all times.
This artistic movement even has a NAME. It’s called Literary Realism.
So yes, I’m talking about a specific group of people who gained influence in F&SF at a specific moment in time.