It sounds like calling it a "strike" is kind of misleading, because the workers who are "striking" aren't Tesla employees, they're employers for _other organizations_ who are refusing to do their jobs (for those other organizations) in order to sabotage Tesla. I don't think there's a plausible claim, here, that these unions are acting in the best interests of Tesla's workers; rather, they're working to maximize the power of _the unions themselves_.