But still it was 1965, and Vonnegut made a prediction. He said "... more and more writers in 'the mainstream,' as science-fiction people call the world outside the file-drawer, will include technology in their tales, will give it at least the respect due in a narrative to a wicked stepmother." I would argue that hasn't happened. Yes, plenty of writers use science fiction tropes, but that hasn't bought speculative fiction much respect.
I wonder what scottedelman would say about Vonnegut's time capsule assessment of the field? He seems very introspective about the past lately.