The fact you just posted that opinion you claim no one posts disproves your own point.
Beyond that, what I was getting at could be stated as, what "massive departure" was he talking about? Yosemite is just a GUI modified version of Mavericks with a couple of small additions like the changeover mode from iOS App to OSX. In other words, other than the 2D look, what's so radically different about it? Or do you agree the look is the radical change, only that you happen to like the flat-world Crayola look with hard to read text?
Ahh the internet! Where opinion is presented as fact!