It has been just 3 years since I got my internet connection. And thus I am aware of what it means to be disconnected. Our initial idea wasn't even remotely about AI. I just wanted to make something which could act as a backup network, something which people with no internet(we have quite a share of this type in my city) could also use.
You see, its not just about privacy. A decentralized network helps you connect to people around you. And about the AI part being difficult, well, good stuff is always difficult ;)