If you think plumbing is anywhere near being automated away you must not know much about plumbing. You will never see a bigger hodpodge of materials and fittings in so many shapes and sizes and states of decay.
Maybe on new builds with fresh material, but that is already the easiest and quickest plumbing task.
Depends what you mean by automated.
An entry level largely untrained junior doing pro level work because their AR headset and earpiece tells them exactly what to do next? That's possible today.