We define personal as an attack on one individual. Will's thread was broadly aimed.You may have noticed that we have let many, many threads stay that are broadly aimed: "The Moderates are _________!"; The DLC is ___________!"; "Greens are __________!"; "The Extreme Left is ___________!"; etc.
Are these threads constructive? No, they're typically just flame bait. But they don't violate the rules, so sometimes the moderators let the threads stay to see what happens. And the moderators understand that if someone posts flame bait, that person is going to get flamed.
And in the end, the person who starts the flame-bait thread usually doesn't end up looking very good. So I'm of the opinion that we're not exactly doing them any favors by letting their flame-bait threads stay.