I recently tweeted that I was sometimes irritated that when I've stated something about Scrum that I consider a shortcoming, I usually get called a "Scrum Basher". I would much prefer people engage me on what I have designated as a short-coming of Scrum. If, in fact, my assessment is right, I would be helping those who would be running into a problem. If, in fact, my assessment is wrong, it would be better to engage in a conversation with me to let both myself and others, that my opinion was wrong.