This is probably already researched today, and it seems close to how people would interact with clones of their deceased relatives or famous people of the past.

This is probably already researched today, and it seems close to how people would interact with clones of their deceased relatives or famous people of the past. However it's also a powerful tool to create nearly 100% successful influencing by instructing each persona to subtly inject the same idea into its human user by employing the most convincing tactics needed for that user. It's quite easy to foresee the use in advertising, where it would completely redefine the word "targeted", but also corrupt politics.