It isn't only that everything sucks. It is also that the interaction of everything massively sucks even more - if only because there's not one single neck to wring in those cases.

(For example, any recent car infotainment system, from what I have read.)

A small example: Ubuntu 14.04 desktop, running 2 Firefox profiles thus 2 windows, and I am trying to switch windows. Sometimes when I go into the 'expose' mode for those 2 windows and click on the one I want (the other one, that doesn't show up when Alt-Tabbing, at least not w/out a long pause on the Firefox entry in the Alt-Tab list) then it doesn't actually work and I end up on the same window again. Who is to blame? Firefox? Ubuntu? Both?