Update (3/28/2020): More information has come to light on the specifics of what MS is changing. As of this writing, only the "System" applet appears to be impacted. As Jim Salter points out at Ars ...

Over the past few years, Microsoft has been steadily working to deprecate the Control Panel, moving key functionalities to the more modern Settings app. While I am all for user-centric changes, this ...

Considering that when you choose "advanced" settings from the new default app it just sends you right back to the classic menus its clear that its not a full replacement as of yet. It's a boring job ...