I'm no sociologist, but...
Social groups with something in common usually has unwritten rules that can be summarized as "Don't be a jerk". As the community grows and more people, and therefore more jerks, join. The social control in the group loosens and a bigger need for a formalized set of rules emerge.
I congratulate the OSHW movement for, by this article, taking the first steps towards formalizing their rules, and becoming a more jerk friendly (or unfriendly depending on how you see it) community.