Actually applications like this will probably be implemented on the cloud-based models, since 98% of the public does not care about privacy as much as people on this forum.
That said I think trying to verify someone's identity through online means only became viable a few years ago when everyone had a somewhat working camera and microphone available, and with any luck the risk of deepfakes will cause an early end to the the scourge of people trying to film themselves holding a form of ID.
We have been there for the past few years. And yes, it has been actually used for scamming.
Submitted only a couple of days ago: Voice scams: a great reason to be fearful of AI - https://news.ycombinator.com/item?id=35459261
nor the other possible point that Statistical Large Language Models are not problem solvers, as in fact are special in Machine Learning for optimizing for goals transversal to actual "solutions" (not to mention that it is already a Sam Altman, while proud of the results («They are not laughing now, are they»), the first to jump into alarm when people drool "So it's AGI!?" on him),
but it must be noted that those scams happen because people live lightheartedly their responsibilities (such as, realizing that they are not in the XVIII century anymore) - and the post has a tint of this dangerous laid back approach.
(I would suggest that you mark sarcasm, e.g. with '/S' or equivalent. Once upon a time we all thought that rhetoric is immediately recognizable, then we met people who would believe ideas beyond the boundary of "anything".)