Well, it's a little late for that one.

Fire one of the many offline LLMs up on a university network or somewhere else that a single IP connecting many times won't be too suspicious and let it go to town.

Why? The only difference is that everyone can afford it. It is probably better in the end than only having paid chills doing it, since people will realize they can't trust "internet consensus" as being a actual consensus.

The real problem for some sites, is the amount of believable spam on mindless rant feeds, like Twitter and Reddit etc.