Movement-building is categorically different from incident response. I agree that transparency and speed are the important features when it comes to incidents.

But when it comes to movement building, it seems like a bad first impression is difficult to remove, and questions of where to draw new adherents from has a significant impact on the community quality. One also has to deal with the fact that many people's identities are defined at least in part negatively--if something is a thing that those people like, then they'll dislike it because of the anticorrelation of their preferences with their enemies.