I agree - not only is the person at some level, lacking the courage to come out openly with what they are angry about, not only are they being insincere, but also, it is a form of aggression.

Using very little energy themselves, they wind other people up and cause cyclones of upset, distress and mayhem. I think it's usually very deliberate, not just someone lacking confidence.

I’m an artistic writer who loves to use pen, paper, clay and computer to support self and societal health, empowering thru the light of truthtelling stories.