There seems to be two camps of people in the comments here. One camp is saying more or less what you say, and the other camp is people who have had it happen to

There seems to be two camps of people in the comments here. One camp is saying more or less what you say, and the other camp is people who have had it happen to them personally and don't wish to expose themselves to the possibility of the downside risk again knowing how sucky it can be. Source: I've experienced a situation where I gave honest feedback and nothing bad happened, and I've experience a situation where I gave honest feedback and it impacted a subsequent employment opportunity.