Well that is certainly true. Since I have had Rottweilers for 34 years I can definitely tell the difference between the temperament of the dogs in the past to how they are now. Due to fear of breed bans many breeders have gone a bit over board and breed dogs that have "safe temperaments" In doing so, we now have Rottweiler shaped Teddy Bears. I have mixed feelings on that because I don't think the integrity of the breed should change, the laws should. That said, now as an old lady, I am loving my teddy bears. I don't know how my boys would act as they have never been tested and hopefully never will. I know for a fact a few of my past dogs would have left that guy bleeding for sure.
I know I have said in other threads that I have been accused of "over socializing" and this is in part, what the people that said it meant. Any time My dogs have shown aggression whether to protect or not, I put a stop to it. I did this again, because of fear of losing my favorite breed. I suspect that a dog that was allowed to roam loose at a jewelry shop was over socialized too. People act weird sometimes, sometimes customers get angry and make a scene. Likely this dog was socialized to the point of ignoring most of that. Good for him for trying at all but honestly, his bites did appear more like " I am not sure what I should be doing here and I am a bit scared" If he was engaged as Johnny Bandit spoke of, that man would have been on the ground crying for the owner to pull the dog off.
Truer words were never spoke. The sad thing about the media showing a "protective Rottie" is again that is fuel for the wrong owners to want one. If he would have been "protective" the media would have likely not been good either. Either way good to see he tried and the owner, the dog and the store were all safe and the bad guy got busted. Love those happy endings.