Why you should not use Xamarin?

Why you should not use Xamarin?

"You can use xamarin/Visual Studio studio to create Android apps, and you can even create cross-platform apps using only c#.

Xamarin provides tools and libraries for developing apps for Android, iOS, tvOS, watchOS, macOS, and Windows that complement the.NET development platform.

https://dotnet.microsoft.com/en-us/apps/xamarins"