Stripped of fluff, the main point of the article seems to be that their engineers are doing too much manual repetitive work, due to bad tooling and processes. Why would that be caused by their performance review system?
(I don’t know that this is the case with Amazon: I’m just providing an anecdote based on my observations at places I’ve worked.)
May be because their performance review prioritizes employee contributions that impact bottom line immediately instead of building infra that might improve developer productivity?