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.