While there’s no reason to believe some broad conspiracy exists, it’d be hilariously ridiculous to assume that the folks at YouTube are unaware of the power they have to influence the zeitgeist. If some number of them act to advance their individual worldview through their enforcement of policy (is there any doubt that this happens?), then it is perfectly reasonable to say that YouTube, as a result of the conscious or unconscious biases of its decision makers, advances a worldview (though perhaps not a specific narrative).