> but still need many man-weeks or months or even years with a large team to make it into code.

That's an argument that writing code was the time-consuming part, which is different from it being the difficult part.

Well, that itself is a dillema about "which is the most difficult part", whereas the discussion is about whether AI will severely impact/kill the coding job market.

For which question, whether writing code is the most difficult part or not is irrelevant. It's still the part on whch most employed develoopers spend the most time on, and thus, if it gets more/fully automated, a lot of those jobs will be killed.