I know people who commit CONSTANTLY. They may not push for a while, so they can end up with a small pull request that has 100+ commits. It has nothing to do with how hard someone works, and more to do with how often they commit.

I don't care about the community aspect of it, but I worked at a corporation that did care about those graphs when they're completely meaningless. When your bonus depends on how many commits you make, why not commit once per line?

thats not the argument made in the issue

It's more like "stop encouraging self-destructive and ultimately counter-productive behavior." Long hours don't necessarily mean productive work.