Previously, Google displayed the relevant 3rd party links (or, paid links), and Google didn't take responsibility for the content.
This clear boundary was blurred once google started auto-summarizing results with some sort of knowledge panel, which was frequently wrong. Google 1st party data has more weight & liability to it than a link to 3rd party sites. https://www.hollywoodreporter.com/business/digital/10-months... https://www.vox.com/recode/22550555/google-search-knowledge-... https://www.executiveprivacy.com/resources/when-google-gets-...
Already these AI searches provide fatal advice (suggesting 40+ mile hiking days in the desert, lying about the distance between water sources & campsites), this example about the plane, inaccurate dosage of substances, etc. Essentially, any time there's a number that can be wrong with a serious outcome, these services will bullshit the number with disastrous consequences. And there's no 3rd party to hide behind now. There's no 'just a link' - a trillion dollar corporation is directly responsible for these results.
Sort of like manual-driven-cars vs self-driving-cars, removing the millions of small 3rd parties could change who is responsible for the outcome. Rushing these out could be setting the stage for the next tobacco / opioid / talc lawsuits.