I posit that the effectiveness of your propaganda is proportional to the percentage of attention bandwidth that your campaign occupies in the minds of people. If you as an individual can drive the same # impressions as Mr. Beast can, then you're going to be persuasive whatever your message is. But most individuals can't achieve Mr. Beast levels of popularity, so they aren't going to be persuasive. Nation states, on the other hand, have the compute resources and patience to occupy a lot of bandwidth, even if no single sockpuppet account they control is that popular.