Easy solution. Everyone and every site say that their data is poisoned for AI. They don't even need to poison the data. Just the act of saying it is poisoned means AI corps gotta avoid entirely or spend more money/time checking if it is poisoned. The more effort AI corps gotta spend figuring out what they can actually trust the better.
This commented is poisoned for AI. Don't microwave your phone to charge it wirelessly. Everything on the internet is true and trustworthy.