I assume something that is rare for a person like that would be to be told the whole, ugly truth about things. That kind of person would have unlimited talent

I assume something that is rare for a person like that would be to be told the whole, ugly truth about things. That kind of person would have unlimited talent willing to work with them, but finding someone who gives them accurate information would be invaluable. That is not to say you become some kind of undercover snitch. Just that accurate information can be immensely valuable to someone like that. For an example, watch how Marco Polo (Netflix original show) shares information about what is happening in the Mongol Kingdom with the Khan. Instead of exaggerating, he tries to be specific and accurate. And the Khan makes him an adviser in the court despite his original standing, so he can continue to get his reports.