When interviewing people and giving feedback there's a non-trivial percentage of people that react with hostility to even the most constructive criticism.

We're actively recruiting now and it's amazing the amount of hostility we receive sometime when someone is rejected.

There's a HIGH false negative rate on our end. Meaning, we're going to screw up and walk away from candidates that are amazing - but we're unable to realize it in time.

Yet, people will still react negatively.

If I was a VC I would probably quickly learn to just keep my mouth shut.