I think this goes to a broader point: developers aren't necessarily hired to write code.

They're hired to be responsible for some part of the product.

Introducing AI doesn't remove that responsibility.

Folks tend to focus on the code and the tools they're using (maybe I'm cynical from years in the industry). I don't think your boss wants to do your job, even if they could use AI to do it. I think your boss wants to have a headcount, and he wants the headcount to be responsible for the product.