I think this extension demonstrates the flexibility of VSCode and how easy it can be to extend the platform with an extension.

Although it's supported by Microsoft, it's heavily influenced by the Open-Source community. I believe that's the reason it's so popular and user-friendly for both developers and users.

Can you imagine someone trying to implement this extension on a proprietary platform like Visual Studio or IntelliJ? ... going through proprietary documentation with no access of the Source-Code to the underlying system... It would be a nightmare