What often happens in these small community organizations is one or two volunteers join and begin to do a bunch of work to "transform" the organization and expand its reach. They inevitably become "indispensable" to the new organization, which they have wrapped around themselves like a cloak. Then they squeeze it around themselves until everyone leaves and the organization's soul has been sucked out. They move on to other organizations in the same area with a "resume" or "bio."
You'll often see these people everywhere in your community, and they may approach you very quickly to get you involved in their organizations. They are in constant need of new volunteers to burn out on their pet projects. They also constantly promote themselves and are always telling you about what they are doing with other organizations both to recruit you and to make sure everyone knows how "indispensable" they are.
These people are poisonous to community organizations because they will not abide any consensus-driven process that doesn't lead to agreement with them.
Not sure about the resumé part, but I've seen these authoritarian volunteers. They still don't ruin everything. And I think my local church has enough of them that they cancel each other out :D
They don't ruin it every time, but I've seen it happen and have also seen the end result and I'm very leery of specific kinds of people in communities I'm new to because of it.
The biggest defining factor is they have a lot of spare time to push dumb agendas and don't listen to people who have less time to deal with it. I'm not sure what a techbro is, thought it was just a techie who goes to the gym.
You'll often see these people everywhere in your community, and they may approach you very quickly to get you involved in their organizations. They are in constant need of new volunteers to burn out on their pet projects. They also constantly promote themselves and are always telling you about what they are doing with other organizations both to recruit you and to make sure everyone knows how "indispensable" they are.
These people are poisonous to community organizations because they will not abide any consensus-driven process that doesn't lead to agreement with them.