Don't mean to be disrespectful, but that sounds an awful lot like the standard corporate non-reply of "Thank you for your feedback requesting the dead-obvious thing that everyone wants and that we know everyone wants but we are not doing for undisclosed internal reasons. Your feedback is interesting and novel and will be read and carefully considered if you will just put it right here into >/dev/null. Thanks for your time!"

You talked yourself out of trying.

Is it different if you send your comments to /dev/null or if they do? I think it is. In one scenario you at least gave it a try.

From what I have seen, the WinUI story is a complete shitshow[1]. Apparently they realized that tying it directly to Windows releases was a bad idea, and want to packagize it into NuGet assemblies, but kind of can't. They appear to be trying to distance themselves from even calling it UWP anymore, which I suppose makes sense, because it was dead-on-arrival and never gained any momentum.

Windows 8 is still casting a long shadow of half-baked bad ideas.

[1] https://www.sharpgis.net/post/2019/05/14/The-future-UWP

It's hard to trust their roadmaps. They always look good but get abandoned every few years.