It's an old post, they have in Windows 10. Kinda. Many sections in Settings have options for advanced settings that would take you to the old Control Panel.
That's a bit different though. They're rebuilding the airplane mid flight. The long term goal is to replace the Control Panel entirely, it's just a multi-year and possibly multi-decade effort.
That's why they keep linking to the Control Panel, they're not there yet. I think they'll soon be done with the System page, for example.