Nice article except one point: organisations tend to be single issue or intentionally limited in scope to allow wider coalition building. This is IMHO fine as you can easily be a member of multiple organisations.
The friction usually comes from people that want to use an organisation as a platform to promote a niche and controversial topic. People that do this have a really poor understanding of organisation internal dynamics and/or have made their membership of a single organisation too much of their personal identity to see that in the end an organisation is just a tool to achieve certain agreed goals.