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.
But there are? Maybe we have a different underszanding of what that sentence means, but there are anarchist organizations that want to grow bigger. From anarchist unions to anarchists organizations that organize based on ideas such as plattformism and espescifismo.
Right? Just off the top of my head, I listen to podcasts on the Channel Zero Network of Anarchist Podcasts. Started at Margaret Killjoys “Live the the world is dying” and now, due to ads on the network for other shows, I listen to about a half dozen shows on the network religiously. That seems like an organization that is trying to grow, and doing it successfully.
Some of us are antiorganizationalists. Maybe the writer is one of them, and furthermore the type that considers organizationalists to be hokey anarchists or something to that tune.