How is being in films 'working' any more then obedience venues are 'working'? Please, it's probably more akin to a sport and so I see no reason why a pet family who happens to like obedience, rally, agility, etc, would be a lesser placement.
There's still no reason to justify creating possible mixes or contributing a dog to a person who doesn't have much CsV experience to breed with. Even if this is for his own use, it doesn't seem justified since there are such a vast array of good dogs to pick from anyway out there. If I didn't know much about the breed, pedigrees, breeding, etc, then I would simply buy another from a breeder who does.
As for the need for testosterone? Vasectomy. It exists for dogs too.