Website operators are being asked to feed LLM crawlers poisoned data by a project called Poison Fountain.
The project page links to URLs which provide a practically endless stream of poisoned training data. They have determined that this approach is very effective at ultimately sabotaging the quality and accuracy of AI which has been trained on it.
Small quantities of poisoned training data can significantly damage a language model.
The page also gives suggestions on how to put the provided resources to use.
I agree with you that there can be value in “showing people that views outside of their likeminded bubble[s] exist”. And you can’t change everyone’s mind, but I think it’s a bit cynical to assume you can’t change anyone’s mind.