Absolutely. I really hope this was written by some adolescent who is fustrated because no publisher will accept the book, and not by someone anyone considers a real writer.
First, the world has changed but no changed so much. For instance, my mother who was born a few years after the first war had little trouble assimilating late 20th and 21st century technology, or adapting that technology to her own uses. She owned a computer and a flat screen TV.
Second, most writers still use the novel format, which is around 400 years old in it's current format. This is different from older western forms, which tended to be more spoken word, such as Beowulf You can still buy 400 year old novels such Don Quixote. I would suspect that if one were doing something new, then moving from the novel format, or at least messing with it as Kurt Vonnegut did, would be the minimal requirement.
Third, the world has changed significantly in 500 years, but if one reads the old works we still identify the humans as humans and understand the motivation. Yes, most of us would die quickly because we did not bow down to the king, or because we helped a slave escape, or because we did not know to avoid the emptying of chamber pot, but I think the reason to read literature is to learn that we are not all that removed from our forebears.
And fourth, in this brave new world no one can make an author throw away 50 pages of work. If one thinks they through away 50 good pages, then that is a matter of one's own integrity, nothing else. Write the book you want to write, publish it, slip it into bookstore, no one is stopping you. If one is willing to give up one's artistic integrity for greed and actually sell books, then that is something different.
Science fiction helps us explore our relationship with the technology that allows us to amplify our creative abilities. It is different from fantasy that allows us to imagine a world where the rules are different. Imagining a different culture is not that useful because the world that is going to interact with the technology is our present culture. We do not live in a world that everyone, all of the sudden, is going to accept that their way of life is obsolete and immediately embrace new ideas.