Most software excels in a single domain: driving, flying, recording, parsing, etc. I think AI being smarter than us in a single domain like investing is feasible. But to be smarter than us in all domains, even parenting, love, intuition, etc. sounds infinitely more challenging. I think AI is usually thought of in terms of solving computationally-heavy or data-heavy problems. But to be "smarter than us", it would need…
Investing is not even remotely a single domain, unless you constrain it down to something fairly trivial like making minority investments in publicly traded US common stocks where being smarter doesn't really count for much. There is so much trading activity now that the markets have become quite efficient. In order to consistently generate alpha as an investor like Warren Buffet you need access to material nonpublic information (proprietary research), or some form of structural advantage. Those things require a huge range of human skills, not just raw smarts.