Well yeah, if you have one senior with the power of 2-3 AI agents - you don’t need juniors or sometimes mid developers at all. Let’s say you’re Whatsapp and your 20 people develop the app, well now you need 5 at most for the same workload.
Obviously we’re not yet at the point where the CEO can enter “build me the next Uber” in Claude Code and watch the stock price go up.