In the real world performance review is useless. Would you trust Trump's reviews of Hillary as a cabinet leader or Hillary's reviews of Trump as a businessman?

In the real world performance review is useless. Would you trust Trump's reviews of Hillary as a cabinet leader or Hillary's reviews of Trump as a businessman? In the real world people just go through the motions of performance reviews and management doesn't care about feedback until they want someone gone. I have seen people completely delusional that they are so far ahead of everyone else and are uniquely qualified to pass judgement on everyone but not receive any. Their ability to maintain their belief is amazing. It's part of their identity and their need to have power. People cannot be trusted to give impartial feedback about their competitors. I had to leave many of those people behind to advance my career. They continue on in their low paying middle management or developer jobs.