I see your point, but I agree with Desrtopa's reply. I would go further and say that Arq'f ubabe abg bayl snvyrq gb cerirag pvivy jne, vg npgviryl pnhfrq vg (ol jneavat Prefrv bs jung ur unq qvfpbirerq, naq yngre erwrpgvat Erayl'f naq Yvggyrsvatre'f zber frafvoyr cynaf sbe nibvqvat one). So I think he makes more sense as an example for Slytherins of how Gryffindor values are foolish and counterproductive.