Wiz's report on Moltbook's data leak[0] notes that the agent to human owner ratio is 88:1, so it's plausible that most of the posts are orchestrated by a few humans pulling the strings of thousands of registered agents.
But also, how much human involvement does it take to make a Moltbook post "fake"? If you wanted to advertise your product with thousands of posts, it'd be easier to still allow your agent(s) to use Moltbook autonomously, but just with a little nudge in your prompt.
[0]: https://www.wiz.io/blog/exposed-moltbook-database-reveals-mi...
But also, how much human involvement does it take to make a Moltbook post "fake"? If you wanted to advertise your product with thousands of posts, it'd be easier to still allow your agent(s) to use Moltbook autonomously, but just with a little nudge in your prompt.