I care. Armitage's name was conspicuously absent from almost all the MSM coverage I saw about the Plame affair, even after he was identified as the leaker. The linked article is just more of the same: innuendo-laden disinformation.
As to who knows and who doesn't know, that would make an interesting poll question. I bet that of people who had heard of Valerie Plame, less that 5% could identify Armitage as the guy who leaked her name. Most would say that Libby was responsible, then Cheney, then Rove. It was an effective propaganda campaign.
Every time Cheney speaks up, the administration instructs their minions in the media to come up with a “story”.. First it was the threat to “investigate” then it was the threat to prosecute the CIA agents and now it’s this.
They need to get a new playbook, this one doesn’t work on a real man.