Touchscreens are the worst interface option. The feedback of feeling a button, or anything made for the job, is better than typing without specific feedback onto a screen. It won out because of you don’t have a set interface it’s bettor.
Now for search, chat gpt will likely always be less reliable than a list of results you can vet yourself for content and source.
That said… I don’t think people care about truth that much these days so one response that feels correct is could be good enough for most. Terrifying times we live in folks.
Irony of this article, predicting end of Google, is that articles like this are going to be replaced by these summaries too.