Respectfully, I think your reply assumes that I am suggesting the only AI interface must be on the phone.

It should be everywhere, as a first line of customer service. Even once talking to a person, real-time translation is necessary -- it's not possible to staff enough skilled employees in every language on earth.

I'd like to call out that "I can't log in" is the most common problem with Facebook, by a wide margin. HN user anecdotes are just not useful when assessing the scope of this problem.

I'd also like to call out that many people (usually not English speaking) nearly exclusively use voice memos and phone calls, and rarely type anything at all.

I think it is clear that AI will enable better customer service from Facebook. Without AI, a FB call center is clearly impossible. With AI, perhaps it begins to look feasible.