Dogs that excel in agility and obedience and other dog sports are never robots. They are just incredibly tuned in to very consistent handling and are usually part of an amazing partnership with their handlers. It amazes me how my youngsters really very quickly learn what a wide range of complex cues mean and can put it together under pressure in a trial ring. They are definitely not robots, just your regular fun loving dogs that love working and trailing with their person.
Staffies are very popular family dogs over here, and besides I always thought they were known for their love of people. I have met plenty of sweet, nutty, full on staffies but never met one nasty towards people.
Training dogs should be encouraged, way too many are dumped at the pound and euthanaised because they wernt.