Earlier quoted context omitted.
You're not wrong, all of that is great. But the capacity for even more spam calls and scammers generating fraudulent content with cloned voice samples will be an immensely annoying issue. Anyone who owns a phone in the modern age absolutely cannot be a Pollyanna when looking at this technology. There are real issues that must be addressed.
Is access to realistic voice really the limiting factor in spam calling?
Once your brothers voice has been cloned and generative AI can deep fake his face on a video call, we are pretty much screwed.