I'm dealing with a lot of this right now. The product managers working on the Windows App SDK just cannot seem to fathom the notion that not all Win32 apps are written in .NET or C++. I've got a GUI written in Go that I'm adding WinUI3 features to, but I pulled that off _despite_ their SDK, not _because_ of their SDK.

The irony of all of this is that WinRT is built atop COM, which should allow it to bind with any language that supports a C-based FFI on Windows. But then they add all this XAML codegen crap that's C++ or C#-only, pulling us in too deep.