> you can do less and less with your computing devices, or that they become, in
  > the end, more convoluted to use because of the design choices made.

Can you be specific about "less and less"? You can no take a movie, edit it, compose music for it and publish it online with your phone only.

  > Like, turning a desktop computer operating OS to a tablet-like OS is just
  > plain stupid and is a loss of efficiency.

  Are you talking about Windows 8 or iOS, or Linux? The problem with Windows 8 was not turning desktop OS into tablet OS, it's stopping in between.