Ironically it is still the best way to do C++ GUI development on the Microsoft stack, after they killed C++/CX, and replaced it with the pre-historic tooling C++/WinRT.
However for a real nice C++ GUI development experience on Windows, going with C++ Builder or Qt would probably be a saner option, as the WinUI team doesn't seem to get it, and MFC only gets minor updates nowadays.
However for a real nice C++ GUI development experience on Windows, going with C++ Builder or Qt would probably be a saner option, as the WinUI team doesn't seem to get it, and MFC only gets minor updates nowadays.