As someone that went from a strong advocate of UWP, into a strong critic of UWP.

They really messed up WinRT.

Although not perfect at Windows 8 launch, its evolution until Project Reunion came to be had potential.

It was .NET as it should have been from day one, a proper developer friendly wrapper on top of COM, and Microsoft had finally provided something comparable to C++ Builder for the C++ crowd.

Instead they never delivered feature parity to WPF, killed .NET Native, C++/CX, the designer, and then started from scratch on Win32 side, while expecting everyone jump to put up with them, and follow for the ride.

I consider that an ultimately lack of respect for paying customers.