I'm not so sure, I think a junior dev on my team might be being held back by AI, he's good at using it. However he was really struggling to do something very basic. In my view he just needs to learn that syntax and play around with it in a throw away console app. But I think AI is crutch that may distract from doing that. Then again it is utterly fantastic at explaining small bits of code so it could be an excellent teacher too.