To me it looks like they are giving people running linux the minimum tools to run that stuff, but at the same time not giving enough to encourage devs to stay on Linux (WSL goes in the opposite direction, its purpose is to help devs move to Windows). But this is all IMHO, take it with a grain of salt.

By the way, since it's based off MonoDevelop, you can just use it con Linux.

We are waiting since years for a simple xamarin studio for linux, even just supporting only ubuntu and letting the other distro to manage the packages for them... The reality is it seems they don't want at all to bring Xamarin on Linux, sadly Miguel was very clear about it in the years.