I think this is very pessimistic. Yes, big models are "smarter" and have more inherent knowledge but I'd bet you a coffee that what 99% of people want to do with Siri isn't "Write me an essay on the history of textiles" or "Vibe code me a SPA", rather it's "Send Mom the pictures I took of the kids yesterday" and "Hey, play that Deadmau5 album that came out a couple years back" which is more about tool calls than having wikipedia-level knowledge built in to the model.