If one delegates tasks they personally used to handle to Chat GPT, it's likely their proficiency in that area might decline. After all, that's the inherent nature of tools. However, if they transfer tasks they previously entrusted to other people to Chat GPT, their abilities shouldn't wane.
What distinguishes Chat GPT from other tools might be this very aspect. Without the stresses of interactions with other individuals, might efficiency actually increase?
This remains a hypothesis, but it's an intriguing one.