I think most people with that arc were cynical and self-serving in their "community organizing" phase. Careerists, basically, gathering credentials and connections. There are a lot of people like that in "leftist" groups and unions and they are probably the most dangerous people in those groups, as anything disrupting their work (like a reasonable deliberation on what projects to focus on) threatens their personal trajectory. So they will fight, often in unprincipled ways, to keep that planned trajectory.