That's a risk for sure - we're based in Australia, you couldn't fire someone in the way you described here, but I understand that's not the case everywhere. It's something we're thinking about.
In all the testing we've done; the feedback is generally honest but professional. The more pointed feedback is often a call for help from the team, and the manager needs help/training to improve. For example, in one test, we uncovered a manager forcing their team to work insane hours, on their days off, etc., without any additional pay or time in lieu - IMO, they deserved to be fired but were just given coaching.
Sure. But then the business starts taking off, and the MBAs start joining. In no time, they will find a way to maximize profit in a non-sustainable way, and now Mickey Mouse is the top reviewer in Fortune 500s.
In all the testing we've done; the feedback is generally honest but professional. The more pointed feedback is often a call for help from the team, and the manager needs help/training to improve. For example, in one test, we uncovered a manager forcing their team to work insane hours, on their days off, etc., without any additional pay or time in lieu - IMO, they deserved to be fired but were just given coaching.