Lets not forget that C# only exists because Sun won the lawsuit over J++, where several C# features were born (J/Direct => P/Invoke, events, JFC => Windows Forms, COM support), and Ext-VOS (the COM next generation runtime) paper refers to J++, before COOL became C#, and J# was introduced as migration path from J++.

Ironically, after all these years, as means to keep Azure relevant for the Java community, Microsoft has become a OpenJDK contributor by acquiring jClarity, including ARM support on Windows, better escape analysis, and has their own distribution.

And VSCode plugins for Java, developed in collaboration with Red-Hat, are much better than C# Dev Kit, without requiring a Microsoft account.

The description is confusing though. I suppose they did the whole "rebrand" thing because for years everyone thought poorly of experience of writing C# in VSC while it has always been semi-decent (depending on your skills) and got better recently, especially after moving to Roslyn-based LSP from Omnisharp.