It did increase for a while, and then when Chromebooks came out, schools started using those instead of real computers, because it saved a ton of money. So, the students have only been taught to use Google Docs/Sheets/etc. for years now, and no actual computer literacy. Some can write code, but can't find their own homework file. It's crazy, but we stopped teaching them this stuff, so most don't know it.
I wouldn’t be so quick to blame it on Chromebooks. Had they not been developed, or even if schools had never went all in on devices, the future would surely look different but I doubt it would significantly change the average persons’s interest in learning anything about how computers work. Perhaps, for a time, they would be forced to retain awareness of the concept of a file, but eventually someone would realize that most of them really don’t want to, and will happily pay for a sealed black box.
Again, I would compare it to electricity. There’s all sorts of possible futures from its invention, but in each one, I think the pattern would be the same – an initial rise in understanding and awareness as people learn about the new thing, and cope with early limitations, followed by a decline back to near zero as it becomes infrastructure.
To be clear, this saddens me too. I’m not saying this is good necessarily, only that I think it’s inevitable. When I was younger, I was so certain that computers would change the world, and that this change would involve more people discovering the beauty that I had discovered within the machine. Several decades on, I believe that I was mistaken. There is still beauty in there for those who are interested, but most are not, and never will be. It’s just a tool, it’s just infrastructure, that either works or doesn’t.