This is assuming that AI _currently improves productivity_. There's little empirical evidence for this (there is evidence that it causes people to believe that they themselves are more productive, but that's not very useful; _all sorts_ of snake oil cause people to believe that they themselves are more productive).
My baseline assumption right now would be that AI does not, in aggregate, improve productivity (at least in software engineering; it may in some other fields); if it ever _does_, then sure, I'll probably start using it?