From my experience, these Microsoft frameworks never really get picked up by larger parts of the community.
I feel like Microsoft's approach is to create a framework for everything and hope it sticks - though they appear to repeatedly fail. Nobody really used Xamarin. Nobody is using Blazor.
This very minimal documentation of Maui doesn't really scream confidence in their own product, either. I predict this one will die as well.
This so much. Google gets a lot of critique for killing of its products, but Microsoft does the same in the developer community. Except they don't even have the decency to properly announce it when they consider something abandonware
https://docs.microsoft.com/en-us/dotnet/maui/what-is-maui