Even the GT population only includes a small minority of true polymaths...eventually you'll find something that he has to work at.
And just because you and SO know all of the theory about child development (and even have experience with other people's children), it doesn't mean your own children won't find inventive ways of wearing you out! I'm a school psych, and I was such a parenting expert until I had children...
And I prefer to reframe that behavior as "negotiation"--a skill that can be used for good, to develop win-win solutions, and "inspiration"--the ability to help other people to be their best selves, singly or in concert. Extinguishing the behavior is much more difficult than harnessing it. Especially since, if he's this effective with his current approach, it will be very challenging to introduce and maintain a replacement behavior that is more functional.
