Anything in particular? .NET 5.0 (and therefore C#) runs beautifully on Windows, Mac and Linux (x64 or Arm)

.net core has handled that well in the last ~3-5 years. Yeah, not a great rep before that but the new iteration/rewrite has been impressive.

I don't think it really started to settle down until .Net Core 3.0 which is just 18 months ago. Five years ago it was version 1.0 and a bit of a dog on all platforms.

there's always a bit of disdain from anything coming from MS I think that's a fair assessment

Relative to what? Assembly?

C/C++. Java. Python. JavaScript.

It should take less than 5 minutes to get it up and running. https://docs.microsoft.com/en-us/dotnet/core/install/macos

It took me about 60 seconds on a new EC2 ubuntu instance