Earlier quoted context omitted.
> Amazon pays really well maybe 10 years ago. HR is like a rabid dog, fighting for every dollar.
They, the HR and bean counters of the world, don't see the big picture. It's optimize optimize optimize, but then they don't consider what they're actually trying to achieve. Typically if you squeeze every penny, you end up with shit. You can do it, but those costs don't just - poof - disappear. They might, and often do, become more difficult to measure. So if you're the measuring guy, it might look great to you.
But also humans are messy apparently, so rather than try to introspect about what went wrong to make themselves a better manager, or improve their hiring process, or figure out how to remove bad managers, they punt: "Humans are messy. Metrics are actionable. Humans aren't metrics. shrug."
Humans can be replaced, sure, but you can't replace a surgeon with a landscaper -- but that's not going to stop some managers from trying!