Earlier quoted context omitted.
You mean because it’s not boring? It’s like serious literature has to eschew anything that would make it a good story, in case it got in the way of being good writing.
Oh come on, Vonnegut is one of the most obvious examples of well respected American writers and you could hardly call his work boring. One of the 2016 Pulitzer prize winners (The Sympathizer - not cherry picking, just a recent book that comes to mind) was an extremely gripping/exciting story about escaping the end of the Vietnam war to America but it still managed to receive nearly unanimous praise. On the other hand…
I found Franzen terrible FWIW, but there is certainly excellent literary writing out there. Prosecraft is a skill, just as plotting and settings are - neither is superior to the other. And there is a real cultural disrespect for the things that SF does well. I wouldn't mind that if good SF was still allowed to continue in its own place, but lately even that seems under threat (e.g. the Hugo awards are lately dominated by literary prose at the expense of the classic SF virtues).