I can imagine how one could arrive at such conclusion, but I have seen somewhat useful stuff come out of those.

Some key components for me are:

- don't impose too much structure, or God forbid, try to make it fun. It's work, let's complain about work and hopefully some useful ideas might come up - Bring in relevant people, that actually get work done. The less managers the better. - Don't be afraid of being negative. The whole point is to complain about shit and see communalities in problems, and perhaps come up with potential solutions.