What would iOS 7 icons look like if Android geeks made them? Can you imagine? I don't think anyone would ever complain about iOS 7 icons being "ugly" or "designed by a 2nd grade student" if iOS was made open source like Android, and we saw examples like this...
Whoops, aesthetic fail:
A set, visible boundary is a good thing for icon design
Whoops, aesthetic fail:

A set, visible boundary is a good thing for icon design