Or alternatively (assuming that's true) he fired the people who thought about what they commit and kept those whose commit logs look like: "push feature WiP", "fix", "more fixes", "push", "maybe this works?"...
Sure there had so be some frequent but low impact committers. But implying that people with lowest amount of code contribution must have more impact is ridiculous.
I mean, a staff engineer who stopped committing couple years ago? Yeah could be burnout, or could be some major contribution that's not in the stats. OTOH an IC on their second year in position who hadn't pushed a single line? Nah the institutional knowledge is safe without.