Earlier quoted context omitted.
If you know anything of design, Elementary is not a clone nor is mimicking OSX. Or, put differently; everybody is copying everybody. If you have good enough eye sight, then you can see that the difference between OSX and Elementary is huge. Dock was used before OSX, so you can't say that's copying from OSX. The light-gray colors and clinically clean interface was also used before OSX.
They use the genie animation to minimize apps, and the full screen button is identical to the one in OSX. If they're not mimicking OSX then why are things like that in there?
Also, it should be noted: that window control control does not behave the way OS X's similar one does. Fills the screen but does not take the application full screen.