Productive how? Summarising pre-prepared text is about the only thing it can be trusted with. It can't even auto-transcribe meetings correctly, at all.
Maybe generating garbage scaffolding that would need completely rewritings anyway could be useful for people that suffer from analysis paralysis.
I think this AI productivity thing is mostly a myth. Currently.
I guess AI is productive in the artistic fields but I personally am repulsed by anything that looks like it was generated with AI. I think it's a disaster for humanity, all in the name of not wanting to pay creative people for creative output.
I think the comment was sarcasm.
On the other hand, these days it's impossible to tell for sure whether or not someone holds an insane belief.