It's perhaps a slight exaggeration, but it is to make his point that "UI dead simple" >> "Complex UI that you can't tell what's what with a blur". You may not

It's perhaps a slight exaggeration, but it is to make his point that "UI dead simple" >> "Complex UI that you can't tell what's what with a blur". You may not have had blurry vision... But your attitude may have been as if you did have blurry vision. Oh there's no big colorful button? X. Oh this sight is monotone? Boring. X. His points are prescient, if exaggerated.