Earlier quoted context omitted.
So there's no correlation in skill between the people that put hours of their own time into honing their craft, and those that don't?
Maybe, maybe not. I suppose that depends on what and how they choose to practice. And there's nothing wrong with giving positive weight to personal projects. I'm just saying you shouldn't penalize people for spending their personal time on things other than coding.
Do basketball teams sit around worrying that they ought to not penalize players who don't practice free throws on their personal time?