I'm sure in a public facing forum, no CEO would say, "I don't want to know about HR destroying our brand in the eyes of potential hires." But, for practicality purposes, the CEO has finite time and an abundance of things to do.

I could see sending your interview process horror story to a startup CEO and them not even read the email or it not being so bad that it makes the list of action items worth addressing. On any given day, where you are trying to meet operational goals, keep morale high, balance board / adviser obligations, raise that next round, give face-time to existing customers / while spending time closing new customers, making nice with the press, speaking at that conference and so forth...there's always 20 other things that need to be addressed today. After all, that is what you have a head of HR for, right?

How many CEOs have gotten that type of negative feedback and gotten directly involved? That's probably a better question to ask.