Actually, are you sure about that?
That goes both ways and what I was talking about regarding complaints about "griefers." Not everyone is intentionally playing a certain way to grief someone else.
See, if you truly believe that, then you should stop saying that people should be silent in random group content. If you're giving constructive criticism and actually saying it in a neutral and constructive manner, then you shouldn't fear people reporting you for it, if they even do.
I think that goes back to individual experiences as I've seen plenty of people giving advice, and I doubt most of them, if any, were reported.