Why is java circle bigger than C#?

Question

Java

Unlike vk.com/javarush , there are no similar groups with C#. After all, C# is also a large circle of development, and there is a lot of work.

Answer 1

Because mostly fans of such topics sit on another social network: on github.

Answer 2

javarush is a very dubious commercial project, it is difficult to judge the community by it.