I think we agree, at least in principle. Bootstrap is meant to facilitate quick prototyping, though--quick prototypes for complicated flows will include sub-optimal UI.
Desktop solutions I'm talking about: anything in Windows control panel (people still use that OS, God help them), any configuration panel in Ubuntu (go modify your network settings, for example), all sorts of horrible-to-use and yet somehow magically-useful simulation/CAD programs, etc. (A common theme here is that Apple software and most software created for Macs does not have this UI pattern, because it is indeed suboptimal. The rest of the world still sees it a lot.)
Desktop solutions I'm talking about: anything in Windows control panel (people still use that OS, God help them), any configuration panel in Ubuntu (go modify your network settings, for example), all sorts of horrible-to-use and yet somehow magically-useful simulation/CAD programs, etc. (A common theme here is that Apple software and most software created for Macs does not have this UI pattern, because it is indeed suboptimal. The rest of the world still sees it a lot.)