http://www.polygon.com/2016/5/16/11683922/playstation-4-sony-power-button-eject

Anyone else around here confused about these buttons?

Anyone else around here confused about these buttons?

They aren't that confusing since they actually have a logo on them to help identify them. (It is kind of small, but it is there. Even in that picture there you can see the small grey bits on the buttons. Those are the logos. )
Power button is also on the controller... Just like with the PS3. So the only times you really need the main power button are the first time you set up your PS4 (before the controller is bound to it) and if you've rebound all your controllers to other systems.