Oooh - Fashon! (cue Bowie clip)
UIs are just like clothes. You have to climb on board the latest fashion or get forgotten, or at best sneered at.
Remember when the craze for 3D-animated virtual spaces first arrived, though only a $5k workstation could cut it? Then we flung across back to 2D but this time shiny, so shiny that we next flung back to minimalist. Oh look, it's time for another fling. Where to next? Chunky retro? Text shell (because we all have voice assistants now)? Greying-out everything not in focus (so we simply can's shift attention away)? Surely not something functional, that will never beat fashion in the market place. (he types on his beautifully functional but deeply unfashionable Debian/MATE desktop, grin)
Biting the hand that feeds IT
