Re: It's 2018
The key point in your post being "sort-of". Yes, they all know how to use facebook and twitter and, maybe, email. They can probably get on Amazon and order stuff. But they probably cannot use Word or Excel beyond the most basic of activities.
And, more to the point, they do not understand what is going on behind the scenes. They don't understand what file systems do for them. Or do not do for them. They do not seem to understand that the things they can do with a mouse on program X may well work on program Y. Many of them have no clue about keyboard shortcuts (even the very common shortcuts).
I've suggested, several times, to my mangler that we (corporation) need to train our users better. His response is always that we (IT) do not do training - that's the job of the training dept. All well and good, but, in that case, we (IT) need to communicate the clear needs that we have identified to training (and probably help training develop the curriculum). But IT has no interest in that. And, of course, our users' manglers believe that our users already know how to use computers so they don't need further training. And so, our users muddle along, making infuriatingly stupid hell-desk calls as they need to.
Sorry for the rant (although I expect many others have the same sad story).