[dTal]

>My argument is that using a pocketable device as a desktop or laptop is a fantasy

It's not. My GPD Micro PC is currently my daily driver laptop, and it fits in my back pocket. I have done CAD work on it with no trouble at all. There's no "Android app" that can compete with the universe of PC software.

You should try one before you make sweeping judgements about what is and isn't possible.