Yeah, that was my first reaction to that headline too. Given a second thought, he probably means the opposite of "replace", so in this context, "maintain people." maybe? I know marketing headlines shouldn't be interpreted literally, but it tripped me up at first.
I had the same thought. Then I thought, maybe "replace" is what will become opposite. Antonyms of "replace" are
hold
keep
precede
break
damage
deprive
forfeit
lose
penalize
remain
take
worsen
So people will replace AI?