Yes, it appears I am wrong about my label of "novice" from the pure verbosity point of view. Being a core contributor to anything does not imply being a good programmer. I don't know this person (and don't care, I have no ties to the Rails community). I think that dismissing the use of a runtime debugger is a novice action.
I think being a core contributor to major pieces of software does imply you are a good programmer rather than a novice, whether you know of them or use that software or not. "Pure verbosity" - Really? You want to disparage his contributions? Take it easy, man.
He doesn't "dismiss the use of a runtime debugger", he says "I don’t say this to disparage people that use a Real Debugger. I think Real Debuggers are great, I’ve just never taken the time to learn one well."