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the technical term would be "alt-labor organization". It's complementary and supportive to unions and does what unions usually cannot do. Each local chapter does different things and some are directly involved in unionization or works council formation.
I'm not sure what you're talking about. But I wouldn't be surprised. I'm personally trying to push more technological autonomy and the usage of more self-hosted software but it's a slow process. Some chapters though have a lot more discipline like TWC Italy, that is basically all organized on self-hosted stuff and has a social media strategy deliberately aimed at funnelling users away from big platforms.