The reason DHH mentioned for 360 reviews was that they didn't contain any real criticism because you're critiquing your co-workers (I'm paraphrasing This part

The reason DHH mentioned for 360 reviews was that they didn't contain any real criticism because you're critiquing your co-workers (I'm paraphrasing This part stood out for me. This is a very simplistic view, and I would expect more from company leaders. Of course peer feedback is colored. But that doesn't mean it's without signal. A statement like "Sandra is great, her work is consistently on time" can be ignored. It's essentially no data. But a statement like "I couldn't have completed feature X without Susan. She did X, Y, and Z, and these things weren't even part of her job. Everyone needs to be more like Susan." Well... that statement tells you something. And you now have a basis of comparison between Susan's work and Sandras. Give Susan a bonus and Sandra a thumbs up.