“automate it away” ironically still requires a human in the chain to determine what to automate, how, and to maintain that automation. Whether it be derived from an ai or a systemd script or an Antikythera mechanism. Now if you leave that to seniors you just ate a big chunk of their day playing shephard to a dozen plus “automated” pipelines while they still have stuff to do outside the weeds. Now you need more seniors and pretty soon they want triple what you could pay a junior and I don’t think they are 3x more prolific if the junior is managed efficiently quite frankly.
The process of setting up and maintaining automation should be less labor intensive than just doing it manually (or else why would you automate it?) and almost always requires a more advanced skillset than doing the manual task.