When that one person on the team barely commits any code, and isn't busy with design docs or anything else, they just don't commit hardly any code, taking a week to land 10 lines that adds a new argparse option that you could have written in 5 minutes, then I'll be curious to understand how their tiny amount of LOC isn't relevant.

I think maybe you haven't seen how unproductive some people can be. And one hint of their productivity, is that they don't have much code to show for. If someone can explain to me how they're writing significant amount of new software with less code than this comment I'm typing right now, I'd be interested to learn how they did it.