This sort of purposeful injection of "bad" information has been possible rather cheaply across plenty of platforms that are open to use like this, even before modern generative ai. Some have suffered, clearly, but others have resisted it rather well for years. And they continue to be useful even with the new tech. For instance, how do you think high value targets like Wikipedia continue to resist this sort of behavior?

Perhaps considering that may bring some creative ideas to mind for you and other hackers, other than the pessimism that seems to underlie your take here (it seems not uncommon these days).