Yes, the Xamarin.Forms to MAUI rewrite, killing off MonoDevelop/Xamarin Studio, and with exception of a few key technologies like the linker, llvm AOT (used by Blazor), and the mobile targets, everything else is gone.
There are few public faces from Xamarin still at Microsoft.
Maui seems to have been a certain kind of clusterf. As for MonoDevelop/XamStudio/VS4Mac that mostly seems to have become a casualty of the general VSCode bandwagon that was probably hard to foresee at the time they bought it.
https://nanoframework.net/
https://www.wildernesslabs.co/
Yes, the Xamarin.Forms to MAUI rewrite, killing off MonoDevelop/Xamarin Studio, and with exception of a few key technologies like the linker, llvm AOT (used by Blazor), and the mobile targets, everything else is gone.
There are few public faces from Xamarin still at Microsoft.