Well, you can disagree. No problem there.
I would just take issue with some of the generalizations you bring up, such as: allergies, overly aggressive dogs, etc.
I could talk/write for hours on what you bring up, but I won’t. However, I will touch on each a bit.
1) Allergies. What you mentioned is not exclusive to any type of GSD. It can be present in all bloodlines. But, what we have found is that a lot of skin and other problems diagnosed as “allergies” are not allergies, but are actually due to the poor dog food that is being sold as “premium” dog food here in the USA and in Europe. In about 85% of the diagnosed allergies we have seen, switching to a good, high quality dog food (or even to home-made food) fixed the problems. It take awhile, sometimes as much as a year, but it does work. The problem was not allergies, but crap food. (A separate issue is also the quality of the veterinary care and diagnosis...)
2) Aggression, fearless, hardness, overbearing characteristics. It sounds like you are not a competitive dog trainer, particularly for schutzhund. And it sounds like you have watched and believed a little too much of the Cesar the “Dog Whisperer.” Suffice it to say that a lot of what you are talking about is not what you think it is, and has more to do with training methods than genetics/breeding. It is true that European GSD are bred to do bite work, and they have to have a certain ability to be aggressive, but problems with genetically over-aggressive dogs is overblown. I have only seen a small hand full of genuinely over-aggressive dogs in over 30 years of training and breeding, and these were only placed with people that knew how to handle the dog and had experience with this. Nearly all responsible breeders worldwide will not place these dogs indiscriminately (if due to nothing else but liability issues). However, there is a small population of breeders and brokers that have no such ethics, and will sell these dogs to unsuspecting people. I have also seen this, and it does not make for a good situation, and generally ends up with the dog being euthanized. There is a lot more that can be said about this, but this post is already too long.
3) Breed standard adherence. Yes, you are correct in that it is only words, but breeders that want to be known as good breeders had better breed to the standard and have their dogs periodically evaluated by an impartial judge, or they won’t last very long. Take my word for it, if you don’t follow the published standard, you won’t last very long. People won’t buy your dogs. Most people that “want” to be breeders last less than 5 years. They don’t realize how hard it really is to follow a standard, and to have your dogs out in public and evaluated and talked about.
4) Stability, and aggression again. Not sure exactly what “stats” you are referring to and what you are trying to point out... As for the ability to perform protection routines in the European bloodlines, both working and show lines are required to have working titles to be shown, so the ability is there, in varying degrees. (Not going to talk about “fake” titles, etc. as that is a whole different can of worms...) Not true in AKC dogs. As I already pointed out, they are essentially not the same breed, and most responsible breeders on both sides of that chasm will not mix the two. Almost never works out good, past one generation or so.
5) “Fear-biters.” I don’t know what sort of experience you have had with this sort of thing, but fear biting can be extremely dangerous and damaging. My wife sees quite a bit of this in her business, and she specializes in these sorts of behavior problems. Your distinction between “genuine aggression” and “fear biting” is artificial. Fear biting is aggression, as the dog actually tries to bite or is successful. The motivation behind the act is the issue, not that actual aggressive act. It is not anything as simple as you are suggesting. And as I stated earlier, genetically overly aggressive dogs are rare, especially in GSDs.
Sorry for the length of the post.... Enjoyed the discussion!
Do not have time to post in this place, on iPad, so let me comment on the thing closest to my heart: you are talking to the Queen of allergic GS, the photo shows the dog who is Queeb of allergic dogs. Ask her dermatologist, she has the thickest file ever. She was itchy from the time I picked her up at 9 weeks. She and our other dogs had good food, and Tara nothing but IVD from when she was 1 visiting the derm 1st time.
No one has been through what I have been through with this 1 dog! My sister almost as bad with 2. All pure German.
The greatest dog I ever knew was my last, a half German half American show. Very healthy, tough and bold BUT steady and stable, and merry and playful. She was the best ever, and I kid not. Worst thing, seasonal allergies resulting in ugly pussy sores for the season, but no big deal. German half? I know it’s anecdotal, but I never hear anyone talk about allergy problems in any circle. Not that I have tons of experience!