Windows 10 still has two different control panels. Last year, a Microsoft PM tweeted he hadn't had to use the old control panel "in months": https://twitter.com/brandonleblanc/status/650519136196366338.... Microsoft had been shipping two control panels for three years at that point. People would be apoplectic if Apple did something like that.
This is kind of what I like about Windows 10; it can be a dumbed-down experience for people that don't care, but if you want, there are gradually escalating levels of configurability. Settings -> Control Panel -> fuck it, I'll edit the registry directly.
I would definitely not want to maintain this codebase, but as an end user, I'm happy.
I know that's snark, but I just went and counted them anyway. There's at least 413 individual different settings in macOS Sierra's System Preferences, excluding Flash Player.
Yeah, that's a good reason to use it, and it makes sense that the tool is there. But there's a big difference between having a CLI tool for digging around when you need it, and having two separate GUI control panels with some settings in one, some in the other, and other settings in both.