This “Don’t worry he’s nice” shit is pretty irresponsible imo. Ignoring the fact that animals are still unpredictable regardless of their track record, people can sometimes have real trauma with dogs and letting your dog just trot up to people willy nilly could really upset someone. Also something could happen to the “nice” dog if the person or other animal isn’t nice and frankly the owner of the nice dog would have only themselves to blame.