It's not really about punishing someone, more of trying to get them to cool off.

You also have to realize that someone stupid/crazy enough to shoulder-pass at highway speed could easily be the same type to preemptively pass while you are mid lane change and make it look like it's your fault, either purposefully or after the fact. So, I prefer keeping an eye on someone riding my ass to be alert to them, waiting for them to back off.