Only 2 Years ago?
Who needs efficient if it can be pretty.
There are a strong following that believes if they find it aestheitically pleasing it must be more efficient.
Maybe we're all missing something, and we're supposed to be staring past the visual cues at all the white space in order to achieve some sort of zen enlightenment...
...but then again, I've yet to see any signs of higher thought in any flat ui fans whatsoever...that only leaves some levelling bacchanal.