Earlier quoted context omitted.
Haven't read the linked study, but it seems like all of those metrics (except time to restore broken service) can be very easily gamed - thinking about the recent SO blog post https://news.ycombinator.com/item?id=25373353
Why would you want to game metrics that honestly can help improve your business outcome? The study is worth reading and to put it simply: the metrics seem to make sense anyway and if science proves that they do, that’s even better.
Q: If your manager imposed OKRs/KPIs on your team, especially if there were a financial incentive linked to achieving "results"/"performance indicators", how would you feel?
Note that what is good for the business may or may not have much to do - at least in the short to medium term - with what is good for the employees.