It's just another view of the control panel. It's maybe a little more useful in Windows 10 (and also Windows 8.x) since there are two settings apps, although I'd suggest that the best way get things done in Windows is to use search - just hit the Windows key (or click the Windows logo) and type "Bluetooth" or "printer" or "uac" or "update" or whatever. And of course, with Windows 10 you can boss Cortana around, too.
Interestingly, this also works in Windows 7, so it must be a pretty old feature. But it doesn't give you any god-like powers, just a lot of functions from various control panels assembled in one place. And any function that requires admin privileges (like "create an account") brings up the usual prompt for the admin password.
It's just another view of the control panel. It's maybe a little more useful in Windows 10 (and also Windows 8.x) since there are two settings apps, although I'd suggest that the best way get things done in Windows is to use search - just hit the Windows key (or click the Windows logo) and type "Bluetooth" or "printer" or "uac" or "update" or whatever. And of course, with Windows 10 you can boss Cortana around, too.