Does it really need help? I struggle to imagine a scenario where one would consider MAUI not supporting Linux to be an issue (if we discard superficial bad faith concern) when Avalonia, Uno or, if you care about Linux as the main target, Gir.Core exist.

And, at the end of the day, you have a tool with an extremely rich FFI capability so whatever is available from C you can use as well.

Sorry I clearly was not clear enough. I mean specifically an issue with MAUI itself. I agree dotnet/c# have some solid UI options cross platform at this point. MAUI however seems to be at best a mess and at worst dead in the water.