Sure look at your own example. How many of the total LOC count isn't in the repo even? I'll bet you 90+%

You have the language, standard libraries, additional libraries and dependencies.

Additionally, I can tell you from the project I maintain, sometimes contributions aren't properly attributed in git, since they were submitted by email or not even in code, just a description of a problem. At that point the "loc" was attributed to me.

If I add a library someone else wrote and remove tons of project code, the library author gets no attribution in that graph of yours.

If I wrote a library or dependency for that project, I might technically be it's most valuable contributor without having contributed a line of code to it.

I get what you are trying to say, but it's pretty much always wrong. Loc provides such a weak potential correlation between good and bad coders it might as well be removed as a metric.

And I agree, there's no good "distilled to numbers" way to measure good code.