"Becoming a social site" is easily taken the wrong way, it doesn't mean "becoming like facebook."
A big part of FOSS is community contribution. This is social in nature, fundamentally. So forges are already social in the sense that many people can contribute with bug reports, PRs, comments on issues, forking, merges, etc. These forges wouldn't be becoming more social, they're already social, all that's changing is they won't be islands anymore.
A big part of FOSS is community contribution. This is social in nature, fundamentally. So forges are already social in the sense that many people can contribute with bug reports, PRs, comments on issues, forking, merges, etc. These forges wouldn't be becoming more social, they're already social, all that's changing is they won't be islands anymore.