[nathanlied]

Why couldn't HR see this as just a data-point? Put things this way, if the "junior opinionated guy" is full of it, this kind of feedback won't emerge again, and you can discount it.

Or maybe you've got some other data-points indicating this guy is an issue? Say, his projects are consistently late, or there's issues developing new features, or his teams have a higher attrition rate, or, or, or.

This is why it's my opinion that these things should be as secret as possible so people can feel comfortable voicing their real opinions knowing it won't blow back on them, and the company can get real feedback that might prevent thornier issues from becoming terminal.