Campaigns buy every top-level domain variant of their candidate’s name that they possibly can, just to prevent somebody from putting up a hostile site on one of them. The cost of protecting their image. I’m open to hearing how this is somehow less reasonable than that. But the argument better be pretty damned good. “Eww, that’s tacky” is not a good argument.
Eww that’s tacky is about as intellectual as the anti-Palin arguments get.