Maybe an unpopular opinion, but working in IT has taught me that people are generally… really dumb?
What I’ve run into is that most people cannot read. And by that I mean that they are functionally illiterate. I’d say that’s true of about 90% of people. They can see words and sort of connect them but don’t really know what they mean in any larger, cohesive sense; there is no gestalt that ever forms.
And the second problem is that hardly anyone can follow step-by-step directions at all. Of the users I’ve supported over the years, maybe 5% of them could correctly complete anything with more than 3-4 steps to produce the expected end result.
So, combine functional illiteracy with the related inability to follow any sort of procedure reliably and it’s amazing anything gets done at all.