Okay, I've found yet another reason to stick to the #Fediverse .
Because you just _know_ that climate change deniers and fascists will be using #LLM generated comments to absolutely flood #Facebook and other social media sites to attack any political view they disapprove of, if they aren't doing so already (and I suspect they are). After all, their goal is to demoralize the opposition - especially people who like to argue with actual facts, since writing fact-based comments take a _lot_ more time than AI-generated troll posts.
The Fediverse isn't perfect, but at least it's possible to block the instance from which such garbage posts originate.