If AI is good enough that juniors wielding it outproduce seniors, then the juniors are just... overhead. The company would cut them out and let AI report to a handful of senior architects who actually understand what's being built. You don't pay humans to be a slow proxy for a better tool.

If the tools get good enough to not need senior oversight, they're good enough to not need junior intermediaries either. The "juniors with jetpacks outpacing seniors" future is unrealistic and unstable—it either collapses into "AI + a few senior architects" or "AI isn't actually that reliable yet."