It's the notably poor quality of LLM-generated code

As opposed to the incredible code that humans are known to write...

If attention is all we need then what is better

Hours of human attention

or a few seconds of AI attention?

I am not just talking about writing the code but the brainstorming that goes into it.

I mean, yes? Every engineer on my team produces better code than Claude. There are plenty of examples of excellent human produced code, so this argument always falls flat for me.