^^^Yes, and that "explanation" worked as well as these things ever do in fantasy. Naturally Sookie got the light and Jason didn't, because sluts like Jason don't deserve the light. Suddenly talking about a gene is even worse than talking about midichlorians. We know a gene doesn't do magic!
They're certainly moving along. They're hitting the vampires=gays, oppressed minorities generally really hard. Unfortunately for the metaphor these vamps still are monsters, so that also means gays, oppressed minorities generally=monsters, too. Ick.