Juniors are not as capable of delegating to AI as seniors are. Delegation to AI requires code review, catching the AI when it doesn’t follow good engineering practices, and catching the AI in semantic mistakes due to the AIs lack of broader context. Those things are all hard for juniors.
Isn't that the point, to be able to learn that.
The craft changes with all these AI helpers, so the juniors have to also catch up/change with it. Or there won't b any seniors in due time.