True, true they did. I still thought, as a kid, it would've made sense for a future society to have more of a grasp on utility, and it was a bit sad to see nobody seemed to do anything in art in the twenty first century and beyond, cuz they only ever listened to music from baroque to classical, jazz, and watched crewmembers in the holodeck re-create Shakespeare, Sherlock Holmes and the like.
It makes me wonder, even though a scientist by profession, if there are a lot of us who think we will have no more art-forms or new pathways for storytelling? Bt then again, I just watched a doco on a Japanese artist who delved into Temporary Art, which he does with rapid, close-cropped and well timed fireworks that carry a sort of paint that upon explosion make enough color he can create abstract style formations in the air, and then it dissipates after a few seconds.
The problem with portraying art in Sci-Fi is that it exponentially increases the degree of difficulty. The production itself is an artistic endeavor, so nesting further artistic novelty, whether in the form of sculpture, painting, music, fashion, theatre, or even worse some completely new form, is hugely difficult, and fraught with danger. In a few years, people will watch the show and wonder why the art/fashion/style in the 25th century is so two years ago. So the tendency is to be bland, in the hope that things won't seem dated, rather than futuristic, in a year or two.
A production has a better chance of not looking ancient if its styles are bland. Of course, the
technology can't be bland - futuristic tech lies at the core of Sci-Fi - and as a result, it dates very badly. The flip-out communicators in TOS were incredibly advanced to 1960s audiences; But today they are ludicrously clunky and feature poor. Even those technologies that remain 'futuristic' (phasers, transporters) are portrayed using special effects that leave modern audiences more amused than impressed.
Both Star Trek and Star Wars appear to have made deliberate decisions to go bland, on the understanding that today's futuristic is tomorrow's old-hat. Shows that didn't make that choice tend to look more like comedy than drama to modern audiences - I am thinking about Space 1999, which is so '70s it's almost painful, but it is far from the only offender. Only in the case of Dr Who is the changing of fashion almost a feature, rather than a bug, (particularly for nostalgic viewers of repeats). The idea of 'regeneration', allowing not only the lead actor, but also his style, to change over time was inspired - But the success of Dr Who means that other shows cannot use this trick, for fear of being branded derivative.
Creating art is hard; Creating art that appears futuristic is harder; Creating art that will continue to appear futuristic
in the future is basically impossible. So we can't be too hard on Sci-Fi productions that try to avoid the issue as far as possible.