I mean, you say "plenty", but it's going to be only a fraction of the number of people who are perfectly happy with that sort of thing on the desktop, which already isn't very many people (even if you assumed all *nix users sans Macheads were like this, which they're not).

And while you're right to say that mobile UI design can be bad, is the solution to that really throwing out mobile UI as a concept altogether in favor of ... a window manager designed for a mouse and ketboard, running text terminals on a tiny touchscreen?