The bigger mistake is that futurists can’t imagine the future except from their own perspective. Like on the original Star Trek where you’re supposed to suspend belief long enough to assume that women are sporting 1960s haircuts in the 24th century.
Or to cite another period TV show, The Jetsons where the writers seem to have envisioned huge advances in transportation that never did materialize yet were completely unable to foresee similar development in computers (which in The Jetsons are depicted as being huge room-sized dealies with tape reels)
One guy who had an uncanny ability to predict future society and technology was Jules Verne.
Amazing, actually.