[humbleharbinger]

I never criticize a manager. It has very limited upside on the off chance that a manager takes my feedback seriously. OTOH the downside is tremendous.

I don't think feedback in a corporate setting from someone you have power over can be relied on.

[baby]

This. It would be suicidal to leave a manager a bad review. The only thing that works is anonymous feedback which is how Meta/Facebook is so effective at getting rid of bad managers.

[eru]

Either anonymous feedback, or leaving the team or even company.