What's your number? Three? Four?
Guy might end up losing his job and being a mockery the rest of his life and all you've got to offer is to pile on? What is this, kindergarten?
Let's be clear: Dvorak isn't just some guy, he's a professional troll. We're not picking him out of obscurity and pantsing him in front of his classmates. He chooses to be a writer, to push people's buttons, to publish inflammatory material without doing any kind of research. If he loses his job, it'll only be because this is somehow the first time he's actually crossed the line into libel, and if he's a mockery for the rest of his life, he's in the same state he was a week ago, except now maybe some political junkies are in on it, too.
One way to not risk your job and reputation is to be very careful prior to publishing lies about people in widely circulated publications.