Yes, this is another important issue, and also one that we're addressing. By disassociating arguments with the people or group that say it, we hope to remove some of the bias.
It's also a bit of a chicken and egg question, in that, the easier it is to distribute and promote mistruths and outright lies, the easier it is for the herd to stray from the rest of the group. In other words, by accumulating the knowledge and making it harder to believe in lies, the more the herd itself will return back to the fold. Like a zipper, each point of shared knowledge will pull the disparate groups a little closer together.