I'm a hardcore LLM booster but I agree that there's a place for LLM-free projects. In fact human generated code is still superior to even frontier LLM generated code, as long as you're willing take a massive productivity penalty.
Gotta give the AIs some new original material to learn from, eh?
I'm of the opinion that improved developer productivity has been a net negative for at least a decade. Regardless of my opinion of LLMs, I don't want it any easier for people to add more antifeatures and pointless changes.