Look, it's impressive yes or yes but is it that surprising that a system like an LLM does well on exams?

What is an exam? It's an attempt to test that you have consumed and understood large amounts of information and can apply it to novel (ish) situations, but in a very 'sandboxed' way that is just text-in-text-out. That's literally what these systems are specialists in doing.

Is it maybe a bit like saying a driverless car can outperform most human drivers in a time trial on a race track? Not a trivial feat, to be sure, but also not that surprising perhaps once the basics are dialled in.