In most scenarios that I'd get to talk to Elon or Trump, I'd probably get the public persona too. So an AI trained on that and giving it back to me isn't that useless really.
When trained on a private chat group like OPs, you get the private persona towards your friends group. You can talk to your friend for 10 years and still not really know how they would reply to their bosses email, so this isn't that much different.
When trained on a private chat group like OPs, you get the private persona towards your friends group. You can talk to your friend for 10 years and still not really know how they would reply to their bosses email, so this isn't that much different.