[Kwpolska]

Some features were introduced in Java before they appeared in C#. But many C# features are yet to be seen in Java.

> best .NET IDE outside Windows runs on Java/Kotlin.

I would argue “in the world”. And it does not matter in the slightest to a user. The best Python IDE is PyCharm, also written in Java/Kotlin. I don’t know which PHP IDE is the best, but I’m pretty sure none of them are written in PHP, and the same probably applies to Ruby.

[pjmlp]

And many more are introduced into the JVM before they make their way into CLR.

As for mattering to the user, it surely does, it shows how lacking their ecosystem is for specific workloads.