This won't be a popular opinion around here but I think the 'app store' model is a fine thing for consumers. They really do just want an easy way to get and use stuff. Average consumers are genuinely incapable of administering windows systems safely. (You and I can. But we're not average consumers)
The problem is that once they build it for the "Average Consumers" they take away everything else leaving the advanced users in the cold. Hence Windows 7 still being large, and Apple and Linux having some uptics. Of course Apple is doing their best to run off the power users too...
You're right about people's motor and vision skills are not what they used to be, but I find that primarily to be because it's not the same people. Things have been dumbed down for about a decade now, and young users expect things to be simplified, not having experience with anything else.
40-70 year olds have computer experience, and handle cascading menus, middle mouse buttons and overlapping windows just fine - it's the young generation that requires a single application on the screen with simplified controls. And not too many words they have to read.
tl;dr: It's dumbing down for a dumber generation.
I never thought of this before, but now I will have a hard time not thinking of it! That was damned insightful!
You mean on paper? Huh... why would someone do that?
Looks like you have a promising future in web design!
After a number of decimal places, nobody gives a damn.