Ok the Tiobe => Fortran is complete horse shit and we all know it. Fortan and Perl are both more popular than Go in that ranking I mean come on. But sure I agree Ruby is a nichey language, usage-wise about the same as Swift/Scala or maybe even Go. Somewhere in the top 10-15 I'd guess. If you look at web backend languages (e.g remove C/Visual Basic/C++) Ruby is probably top 10.