Certainly they are in the prime position of being legitimately upset, and able to benefit politically.
I think the comment was unfortunate and shouldn't have been used, especially considering the way that other people have acted in the case.
Yet I also think there is a double standard with Chelsea Clinton, in part because of the stupid and unfair criticism she had as a child. Many people still think of her as a 12 year old girl and treat her as such, instead of a capable, adult woman who makes her own decisions. I think that sense of dismissing her as a child is what Shuster was guilty of, and is also a problem with the response.
The analogy to the Bush Twins is interesting, they have been subject to extreme criticism, both fair and unfair, here and elsewhere, yet there is no where near the same outcry. And they have been called many things, from "drunks" in this thread, to "whores, sluts and bimbos".
Now maybe they are, but isn't a lack of outrage over that indicative that this is more than the cut and dry response many, particularly at kos and mydd are making it out to be.
I stand corrected, you are as vapid as they say.