CS leadership is incompetent. To make sure raises are minimal or non-existent, they ensure that annual performance reviews are written akin to middle school slam book entries.
Things are taken out of context, feedback is given on events that occurred several months past, and overall sound like someone has a personal issue they are taking out during the review process. There is no rationale or justification, and the order of events are skewed, presented as truth despite CS leadership's total lack of coaching or assisting in client situations. It would probably be better if the reviews were tied to outcomes expected of the role, but that doesn't seem to be the case. Even if it were, there are no clear KPIs for CS roles. Just a lot of Google docs and processes someone is "working on" but never finishes.
It seems like CS managers and directors just want to keep their own jobs and try to push down their direct reports, causing a lot of frustration and negative emotional reactions.