It evolved over time, by the time Project Reunion was announced in 2020, it had gotten kind of ok.

However, that incompatibility you point out, was present throughout all iterations.

Window 8 => 8.1 => 10 required rewrites, UWP/WinUI 2.0 => Win32/WinUI 3.0 dropped .NET Native and .NET 9 still isn't full AOT, C++/CX => C++/WinRT lost Visual Studio tooling and is nowadays in maintenance mode, yet gets sold as being the way for C++ devs.

Meanwhile, most of the faces on community meetings have changed since Windows 8 days, nowadays most seem fresh out of university without any Windows developer experience given the blank stares when questioned about feature XYZ becoming available, and bugs?, you only have to spend sometime digging around the Github repos.

Naturally, even the strongest advocate eventually gives up.