Precisely. Those choices (made for entertainment purposes) infiltrate into the general masses through insane popularity of movies --> into the designer's personal taste through exposure since childhood ---> then those designers get employed at various medical, industrial, military, etc. fields and they try to put aesthetics/taste before everything else ---> decision makers in these companies also love it because it appeals to their childhood influence and taste too ---> sub-optimal UI goes into production which influences more designers to follow the trend. We love shiny things.

This strawman is pretty tall and perhaps I am just getting old and grumpy :).