Early on, a story's meaning and rationale seem pretty obvious, but then, as I write it, I realize that I know the meaning/rationale too well, which means that the reader will also know it - and so things have to be ramped up. ↗
And, of course, some SF is set close enough to here and now that Anglo and European do apply. Since many of the writers come from those backgrounds, so does much of the fiction. ↗
There may be something to the suggestion about the pace of technological change intimidating writers, though - it's been awfully hard to keep ahead of real developments. ↗
My advice would be to write what is most personal and specific to your experience or your life. And your voice will emerge and because of its specificity, it will be universal. ↗
I just sat down and thought, I'm going to write a song today, I'm going to give it a try. So I just stuck it on a tape like everything else. That was just another song. ↗