Even if the agent does everything, English is an imprecise description of what the code does.

So I personally at a minimum will want to talk “in code” about what code does.

If anything I've seen them go too far with DRY. Like two small functions have logic that you could separate into a shared helper, but no human programmer would do that because it's an unclean abstraction and breaks next time you want to alter either one at all.