You’re generally right but pretty misinformed all the same.
One thing I can say is that if shelters are playing down aggressiveness etc, it’s because of stupid ‘no kill’ laws that forces them to keep the majority of these shit dogs and not be about to euthanize them. Thank all the animal lovers on Facebook who have no comprehension of the situation, have no interest in helping the dog themselves but they’ll sure as fuck tell anyone what they think if they don’t take care of the dog.
It’s a perpetual cycle, lifestyles of the poor and dumb.