Slightly tangential but system ruby is stuck at 2.0.0p648 (which is well into unsupported) and perl v5.18.2 (which I don't know the status support of but is old enough to wonder).

They might as well rip them out and make them an optional package like CLI dev tools for possible backwards compatibility needs (easily installable either with something like xcode-select --install or the java/javac stubs).