Agreed within the narrow confines of web dev (which is all that I do). I used to write 500-1000? LOC per day but now I've built several full fledged (250k+ arr) sites with more features than I've ever been able to implement in such a short time: all without editing a single line of code.

My guess is they are still very useful for more difficult code! But yeah, I can't imagine ever caring about "code" any more, and therefore cannot fathom the need for a full fledged IDE.