WinUI seems to be copy-pasted from UWP, same usability issues on desktops. Unlike UWP, it’s a mess in terms of software quality. Also the runtime is huge, I think the size in MB even exceeds Electron.
About MAUI, it seems Microsoft decided to make an abstraction over native controls. It’s been tried for decades and it always results in the same suboptimal result because these GUI frameworks implement the least common denominator of available UX. In addition to that, on Windows that thing uses WinUI3 backend, see the previous paragraph.
I don’t know anything about Blazor, but it seems that thing is for web apps?