At least with pre-AI search, the info is provided with a source. So there is a small level of reputation that can be considered. With AI, it's a black box that someone decides what to train it on, and as someone said elsewhere, there's no way to police its sources. To get the best results, you have to turn it loose on everything.

So someone who wants a war or wants Tweedledum to get more votes than Tweedledee has incentives to poison the well and disseminate fake content that makes it into the training set. Then there's a whole department of "safety" that has to manually untrain it to not be politically incorrect, racist etc. Because the whole thesis is don't think for yourself, let the AI think for you.