Arguably, there are successful brains behind every successful brain, too. Every great innovator and thinker was building off the backs of numerous other thinkers and teachers in their life. Should we be surprised that it's much easier for a tool+human(s) to do better than a tool alone, given we also expect a single human + human(s) as colleagues to do much better? Never mind the whole learning/development process, during which 22+ years of dedicated effort by adults to shape/craft a functional human worker.

Overall, I'd agree that really powerful tools for specific tasks is going to be the majority of "AI" in the coming years.