>Not sure there’s any deepfakery on the Michael Caine audio

Most likely not, and the parent comment seems to agree with you on that. I think they were just trying to point out, in general, that the arrival of commonplace audio deepfakes might be way more disruptive than video deepfakes, despite a lot of people (including myself) who used to counter-intuitively think that video deepfakes would be more disruptive.