Its a conceit but not unjustified, they have been doing "AI" since their inception. And yeah, Sundar's term up until recently seems to me to be milking existing products instead of creating new ones, so it is a bit annoying when they act like this was their plan the whole time.
Google's weakness is on the product side, their research arm puts out incredible stuff as other commenters have pointed out. GPT essentially came out from Google researchers that were impatient with Google's reluctance to ship a product that could jeopardize ad revenue on search.