I have, and I'm pretty convinced coding challenges are going to be a thing of the past soon. Either that or there will need to be extreme anti-cheating measures in place.
This has a strong feel of "why should I learn multiplication tables when I have a calculator with me at all times?" But instead of multiplication tables it's the entire curriculum.
I can see this becoming a standard tool, which shifts the burden on the student from writing code to critically reading code, writing tests, and learning how to judge correctness.
But the counter-argument is the same: you don't want to be reliant on a calculator at all times.
And that's assuming the tech can even get to the point of replacing the curriculum. It only works as well as it does because it's been trained on text that is effectively many past curricula. What if you add something new? The model will be useless.
I'd be shocked if ChatGPT knew as much about, say, Coq as it did about Python.
I doubt we would hire it, but it would definitely pass the first tech screens.