I don't doubt using an LLM is deskilling. The question is whether it's the kind of deskilling where you can't farm if you don't know how crops work or the kind of deskilling where you can drive without knowing how to maintain your own internal combustion engine.

(In my lifetime, I've even watched mass cellular communication move "replacing your own tire" from skilled to deskilled, since AAA is always one phone call away for most drivers).