[nothrabannosir]

Not sure what you're trying to say, exactly. "There is proof that road rage exists"? OP didn't say "Road rage doesn't exist", he said "It's not universal". A universal quantifier ("all" or "none") can be disproven with a counter-example (op to article), an existential quantifier ("some" or "not all") can't (you, if I understand it correctly, to op).

He's just saying "speak for yourself."

Or did you mean something else?