You're saying that a dog that comes silently is MORE intent on physical confrontation? That's total bullshit and any dog related website will tell you otherwise. Barking is a sign of aggression. Silence is a most often a sign of docility unless they are displaying other aggressive signs like showing their teeth.
You are the one who is ignorant here. I hope you never come near my dogs because they are silent and nice so that would scare the shit out of you.