Earlier quoted context omitted.
HR could totally act in the way the article describes. They exist to protect the interests of the organization, and to minimize boat-rocking. It would be easy for HR to dismiss her claims in the very same way that you are. Before we start down the path of victim-blaming, lets at least consider the possibility her claims are valid.
Telling a victim that they should expect to be abused further (in the form of a negative review) does not minimize boat rocking or protect the interests of the organization. It leaves them open to lawsuits and antagonizes the victim into further action. And if it was true that they were protecting the manager because he was high-performing, why would you make this explicit. It just makes no sense and reeks of one sid…
I see you've never actually dealt with HR departments before.
I worked at a company where the director of IT/Dev hired his wife to the department; they were swingers and engaged in a variety of unethical and harassing behavior. If you got on his wife's bad side he would punish you by taking away bonuses. He was also regularly drunk at work (and later died of liver failure around age 45). They both propositioned women in the office.
Nothing was done. HR papered over any complaints and ensured anyone who did complain was given a bad performance review to ensure if a lawsuit were ever filed they could point to bad performance and claim it was just sour grapes. He was seen as critical to the success of the department and the company had grown quickly. The head of HR was old golfing buddies with the CEO and both were friends with the director in question.
He was only fired once he grabbed one of his manager's breasts while in a huge meeting with a bunch of people. This was not the first time he grabbed women around the office, but there were too many witnesses to punish the victim in this specific case.