Earlier quoted context omitted.
I think you dramatically overestimate the effectiveness of trying to shape narratives and change people's minds. Yes, online content is incredibly influential, but it's not like you can just choose which content is effective. The effectiveness is tied to a zeitgeist that is not predictable, as far as I have seen.
Let's concede you can't shape narrative or change peoples minds through online content (though I would disagree on this). The very act of addicting people to digital platforms is enough for control. Drain their dopamine daily, fragment them into isolated groups, use influencers as proxies for control, and voila, you have an effect.
It's always easier to throw petrol on an existing fire than to light one.