I rarely look at the control panel. It's usually easier for me to type in what settings I'm looking for in the windows taskbar search and it pops up immediately. Although I can type in "Control panel" and go straight there as well. Seems like it may have been a while since you've used Windows.
I was a full time Windows developer (WinForms, WPF, and ASP.NET) for three years until January. I used Windows 10. Still hated it. The search worked sometimes, but that's no excuse for having more than one place to go to change system settings. Microsoft have not released a completed operating system since Windows XP.
I'm not exactly sure which settings you're talking about, but it seems like you're saying that there are multiple places a user can go to change specific settings.
If that's accurate, that is a GOOD thing from a usability perspective.
The main page of System Preferences has more icons than then equivalent "Settings" page in Windows 10, are you talking about something else? Sure, you can find more complex control panels further down in Windows, but the equivalent in OS X is the "defaults write" interface, which is hardly Mac-like.
