Seems like an interesting effort. A developer is building an alternative Java-based backend to Lemmy’s Rust-based one, with the goal of building in a handful of different features. The dev is looking at using this compatibility to migrate their instance over to the new platform, while allowing the community to use their apps of choice.
https://madnight.github.io/githut/#/pull_requests/2023/4
3.4% vs 11.7%
I think C# is probably more popular than it advertises here, but not on GitHub.
C# is regularly under-represented in OSS, in part because for most of it’s existence, the primary implementation (.NET Framework) was not open source or cross platform. It is also very popular in fields where open source is not the norm (game development, bespoke backend infrastructure, embedded apps).
I said it was easy to find C# developers, not that there were more of them on Github.
If the number of possible contributors on github is the big factor here then Python is the obvious choice at 18%.