Then he hammers KtS, which is a behavior that fits his psychology. So no he does not get a scumread.
pedit:
Isn't the too scummy to be scum kind of along the same lines as too townie to be town?
no. because town is trying to looktown, but scum isn't trying to look scum.
Too scummy to be scum is a fallacy. The fact is that this hammer was easily excusable because of the general dislike on KTS's attitude.
I think scum likes to have a real reason to vote someone, other than "i dont like this person."
And it's not a fallacy. You just have to be careful to consider a player's personality when you use it.