Re: Dreadnought-Class Production Line (Spoilers?)
I don't know if "teaching them to be meaner" really makes more sense, but it doesn't need to, obviously whatever he taught them worked.
It looks as if he taught them "bigger is better" and "win through superior firepower".
But did they really need Khan to teach them those things?
They already learned them from Nero.
Just walk away, and there will be an end to the horror.