You have a point. But now it will happen at scale quickly, cheaply, and easily for an order of magnitude more impact.

Beyond these text-based social media platforms, I could see the next generation of TikTok/Instagram "influencer" social media adopting AI rails so there's next to zero effort put into creation. The photography, trends, personalities - all of it - will be generated.

Your comment reminds me of something I read in Ouspensky's narrative of the teachings of Gurdjieff: (from memory) most people are automatons, so they don't actually operate at a very high level of intelligence to begin with.

The above was also expressed (in less cruel terms) by DFW in his "what is water" commencement speech at Kenyon College: (again, from memory) it is our natural tendency to operate in "default mode", which we must fight.

It's a matter of scale, you could have personalized propaganda for each community.