I’m worried what will happen when deepfaked voices improve to the point that you can get a realistic impression with only a very small training set. Imagine receiving a phone call in the voice of a family member telling you that they’re in serious trouble.
I once got a spear phishing call from a scammer claiming to be the CEO of the company I work for. Even though I barely know the CEO, the phrases he was using was obviously wrong.
I'd imagine that's even more obvious for any family member. If a family member calls from any number that's not their number, my first question will be an honest "How the heck did you remember my phone number?"