People love the idea that wu de means either 1. A self righteous right to judge other people over not having wu de - quite a circular argument. Or 2. Not criticising. Actually, the primarily important aspects of wu de refer to yourself - your own honesty, commitment, and belief in yourself over when it's better to remain quiet, and when it's important to speak out.
I notice the original intent of this thread seems to be 'Hey wu de means not criticising anyone' - it doesn't mean that at all; quite the opposite: it means knowing when to criticise.