I'm not seeing post-AI training of juniors handled at all, anywhere. The closest thing is what my employer does where for liability reasons every command executed by an AI agent, even as simple as an ls, has to be manually approved by the developer. This has the side effect of walking you through the AI's analysis, which can be quite educational.

Given the general culture of corporate cost-cutting (the whole appeal of AI is it doesn't need a benefits package), it's possible we're heading into a future where people trained pre-AI turn into a dedicated guild of professional troubleshooters, demanding fat paychecks to parachute in and put out fires when a company's giant blob of agents fails and their in-house staff lacks the deep knowledge to figure it out.