Harry did do exactly what Diana and Charles did though. But Charles was maybe even worse because was heir to the throne!
There was a legal case of 3 counts of harrassment against one of the Royal Advisors. He was bullying Meghan. And Harry was upset that no one would do anything about it because as discussed here, the "firm" had more power than the institution. What I think everyone gathered from the interview, and which is less highlighted for some reason, was that Harry was upset that no one was doing anything to protect his wife and child from the advisor or from the press, but they did everything they could to protect other people. Which we can take to mean his uncle Andrew. If my family wouldn't step up when my partner was being harasssed at work AND in the press but they tried their best to support a weirdo, I would want to to set the record straight too.
Charles had an autobiography ghost written in which he said the queen was a bad mother. Like, ouch.
Edit: p e a d o autochanges to weirdo. Interesting.