Nilay Patel has been talking about "Google Zero" - the moment when Google effectively stops sending any traffic to other sites - for a few years now: https://www.theverge.com/24167865/google-zero-search-crash-h...
I think if you look through this thread you’ll see a lot of skepticism of the AI results, and I think that is a fairly broadly held opinion. The obvious way to check the AI answer is to click through to some sources.
I think for Google to stop sending me traffic, it would have to be essentially perfect at AI answers. It will never get there, especially as so many searches are opinion-based like “what is the best mobile phone right now.”