This is why militant work in socialist orgs is so important. The bourgeois have "free" time from our exploited labor value to spend on crafting narratives. To counteract this, we have to take our smaller amounts of time to do the same but split among a much larger number of people.
Also while the examples you gave are very modern (social network admins and mods), this has been a feature of capitalism and pre-capitalist class dynamics. The ruling class writes history, both directly and indirectly, and part of that is their ability to dedicate resources (time, paid propagandists) to their causes. Business owners were/are often the most active or influential leaders at church, temple, etc. They're the most able to run for political office because they can still run their business and do legislator things simultaneously. Many legislative bodies failed (or still fail) to provide a high enough wage to make it a job that a working class persin can sustain themselves with so naturally they're full of people who are bourgeois. This was by design, for and of the ruling class, in how they maintain a pretense of "civil service" as a sacrificial act of the upper class.
