Possibly, but it makes more sense when viewed through the lens of "Google is an advertising company" rather than a search company.
Also, it's not like Google went on autopilot and pursued nothing in recent years. Clearly they've dedicated resources to AI, so it's not hard to believe they foresaw potential resistance to selling the concept of AI to users and took measures to funnel them into the behavior Google desired, all the while making it appear as a choice the user was making.
Google famously solved the search problem and the spam problem, and technology has only gotten more capable since then. Suggesting that blogspam etc are too difficult to defeat is a tough sell imo.