I'm guessing Tucker agrees it is a disgusting attack against Palin. He may have viewed the story as a means of calling out another deranged Palin hater, and of course the vile nature of it has the benefit of driving traffic to his site. Where Tucker gets it wrong is, it's worth calling out twisted lefties attacking Palin, but not someone like Tyson whom no one on earth pays attention to anymore. Lets say some prominent member of the Congressional Black Caucus said this. That would be worth posting because it makes the point that CBC members are twisted and disgusting. It would have political ramifications and be a huge news story. However, posting thoughts from Tyson is akin to just wandering into the ghetto and recording the commentary of any old gangbanger - which would have no political angle and is just foul, gutter talk.
BS, Carlson has made MILF jokes about Palin before, he is a vile creature, AKA a SOB.