HR represents the company. Where your goals and the company's aligns, they can be helpful. Where they diverge, perhaps less so. I think a lot of these sorts of articles discount the idea that your goals and the company's will frequently align. For example, if you're being harassed, it's very often in the company's interest to stop that happening. It will cause you and perhaps more people to quit if they don't, and th…
I agree with this. However, the implementation might not be what the employee would expect. If the victim is moved to another team or fired and the aggressor doesn't face any consequences, the harassment was still stopped, so I guess mission accomplished?
I guess the point I'm trying to make here is that if you're in such a position, reach out to HR only after you have secured your own legal protection and never expect nor trust the company to be on your side.