And it's not their own language, it's an extension of VBScript. And now that the tools around C# are better and Linux support for .Net is official, they have used these tools to transition to C#. Like you, I don't get the outrage.
Do you think that the name Wasabi contributes to the outrage?
Coffeescript has a similar name to Javascript, so you can quickly draw an association between the two.
The name Wasabi doesn't have an obvious connection to the VBScript that it's based on, which seems to be the cause of people talking about writing a whole new language, etc.
