Generalizations fit nothing. Glad your baby is coming along!
I do only rescue pyrs. Right now I'm about to get in a fourth, making three of these fosters.
I got the one that is ours as a 12 wk old rescue, only been with goats and other dogs, unsocialized. She's social, she leads, she grooms, she rides in cars, she is housebroken, she is good with goats, turkeys, chickens and patrols at night, from the house through a dog door.
Gnocchi and Penne are flock dogs, they live right now with the goats chickens and turkeys. They lead, they groom, they're social. They were nearly starved to death so sometimes they eat grain, I don't mind. I got them a few weeks ago, Gnocchi is about a year, Penne - probably her mother, around three. They are standoffish to the house pack and would protect the goats from the house dogs but they do not aggress and they do not fence fight.
I have four foot perimeter fences - that they do not jump.
I'm getting a third foster Monday - she has demodex mine is the only place she has to go. She'll be evaluated.
I've known six other pyrs. None had ever bitten anyone. Most were distantly social or aloof and uncaring about things outside their circle of responsibility. I've known social pet pyrs and dogs that have never been brushed.
Most of the time a dog is what an owner makes of it. And people fail to train dogs properly, most of the time, especially when dogs have particularly strong drives and instincts.
If you abandon a strong willed breed to a field, leave it untrained and unaltered, you get fairly random and poor results.
Take the same strong willed breed, try to make it a pet, without the right set of rules and training and the dog takes charge.
Neither is the dog's fault. Dog smarter than owner does lead to problems.
People fail dogs far more often than the dogs are bad or wrong or evil.