You don’t say.
Personal feeling: It’s probably not even for corporate reasons. It’s probably a matter of it being a difficult topic to describe properly in three minutes. And as the story’s never crept up to the top of the news cycle, they’ve likely had no reason to describe it at any major depth. Not that it’s an excuse, just a reason for it to get ignored. However, one thing to keep in mind is that it’s entirely possibile that the stories got played during the day — Media Matters used Lexis-Nexis reports, which don’t cover daytime cable.
EDIT: In case you want to see an example of a media outlet doing it right, see this Bloomberg interview with a Reddit co-founder.