General rule of thumb: the more Left organizers want to talk with me about anything but politics and organizing, the more I trust them. They care about me as a person; naturally, that makes me care about them too.
Yes, rapport building is important for organizing. But importantly, rapport building not for the sake of organizing. That’s the wrong frame. You give a shit about other people, period. Also then organic relationships help politics and organizing.
The world is too dark for anything else.