No. It is quite a viable cross-platform language and there is a large community. 1. C# works on Linux almost seamlessly. See the documentation: https://learn.microsoft.com/en-us/dotnet/core/install/linux 2. Actually C# specification is open. Meaning C# is like Java, anyone can implement in any platform. There are even alternating compilers, open sourced, thanks to Mono's efforts: https://www.mono-project.com