Clearly nobody ever manages to use this Go thing with over 700: https://github.com/golang/go/issues. Or .net, over 5000 issues for the compiler alone: https://github.com/dotnet/roslyn. I'd guess stuff like Java, glibc would be similar if they used github

> Nearly 100 open issues on Github. It's not something you want to use in production.

The number of open issues isn't a meaningful measure of the maturity or reliability of a project.