> Unmatched Native Performance
>
>WinUI is powered by a highly optimized C++ core that delivers blistering performance, long battery life, and responsive interactivity that professional developers demand. Its lower system utilization allows it to run on a wider range of hardware, ensuring your sophisticated workloads run with ease.
Microsoft does see a value, the WinDev unit not so much.
"Porting the Clipboard sample to C++/WinRT from C#—a case study"
https://docs.microsoft.com/en-us/windows/uwp/cpp-and-winrt-a...
> Unmatched Native Performance > >WinUI is powered by a highly optimized C++ core that delivers blistering performance, long battery life, and responsive interactivity that professional developers demand. Its lower system utilization allows it to run on a wider range of hardware, ensuring your sophisticated workloads run with ease.
https://microsoft.github.io/microsoft-ui-xaml/
It is like the left hand undoes what the righ one is trying to do regarding security improvements.