I feel that things are pretty different. Although the example of interrupts and jumper settings being common knowledge is a bit of a stretch... it's still amazing to recall that MS-DOS was regarded as an end-user / consumer OS, and that, more generally, it really was regarded as totally normal to need to invest some time in learning about the system, files, directories, typing, configuring/customizing settings and network options just to be able to do what you wanted to do.
I find the current expectations around consumer "apps" to be totally infantile in comparison, where everything is now a single-purpose "app" that does exactly one thing when you push a button, and if you want something even a tiny bit different.. you can't, and that even basic things like files and settings are no longer accessible.
Compare with what the drivers/operators of the earliest automobiles were expected to know vs. what the same category of people are expected to know today.
There's nothing new about this particular progression - we've been through it in dozens of technologies already.
I think the difference is that with those technologies, not knowing is seen as a hindrance (I imagine most people wished they knew how their engine worked, that's useful) that one can simply live with, whereas with computers nowadays I see people just not care about these skills. When I do something interesting on a computer that other people see, the response isn't "huh, that's a neat skill" it's "why?". People don't care anymore. They don't see knowledge as useful or something that is beneficial to pursue
I find the current expectations around consumer "apps" to be totally infantile in comparison, where everything is now a single-purpose "app" that does exactly one thing when you push a button, and if you want something even a tiny bit different.. you can't, and that even basic things like files and settings are no longer accessible.