Yes, I’ve worked in companies that use DX. Generally you get a survey once a quarter, and you can see some basic stats like how many PRs/code reviews are happening.
My company leadership does not use these as a one size fits all metric. In fact, the code review & PR stats never even show up in performance reviews. Mainly, they are used to improve systems around dev productivity. Like, we see that generally, we’re shipping less PRs and the survey shows people think it’s getting slow to merge changes. That is an opportunity to look at where our systems are holding us back.
I think broad stats are also probably still useful too. For example, there have been times that I’m reviewing more code than everyone on the team combined. I WANT my manager to know that’s happening and figure out how to even the workload. Or, why is my team shipping like 2-3 times as many PRs as a similar team with similar headcount? It’s not immediately a PIP or something, but it’s highly likely something odd is happening. Could leadership improve direction & focus, make priorities more obvious?