Candor can be a wonderful gift. In it’s absence, many people think they are doing well, when really they are alienating others right and left. In consulting with managers for 3 decades, I’ve seen as much dysfunction resulting from no candor as from too much.
When feeling compelled to deliver unpleasant feedback, it is common to preface it with “I just want to be honest.” That seems to then release the giver from any need to couch the comments in a way that takes into consideration how their words might affect the receiver. They can spew forth any judgmental and overarching comments in the delusion that they are being helpful.