AI is incapable of solving loneliness. It's a biological signal we have (thanks to evolution) to seek social connections with other humans, for things like reproduction and survival. Mentally healthy people will never be less lonely as long as they know they are talking to a model. All it can offer is a distraction and an illusion, because it has no humanity.
Note: I don't even think dogs solve loneliness. They can make you happy, less bored, and it's a meaningful relationship -- but they won't satisfy a yearning for human connection.
Note: I don't even think dogs solve loneliness. They can make you happy, less bored, and it's a meaningful relationship -- but they won't satisfy a yearning for human connection.