[polemic]

Perhaps it could be articulated as an obsession with the physical and technological. 70s futurism revolved around the amazing materials and electronic advances of the time. That continues today, but we have a much better handle on how that technology is shaping our lives. In other words, 'future-tech' is not futurism (any more).

There are other inspirations out there. Hannu Rajaniemi's maths/crypto heavy scifi draws gives us a glimpse of new ways to think about personality, privacy and culture. The Fountain's future parallel provides a very different view of a potential space traveller, and Isaac Asimov's collective work spans so many cultural diversions that have fallen out of fashion just waiting to be re-imagined.