"Safety lanyards" could be anything, and there's a whole lot of personal anchors that people think will protect them, but actually won't. The problem being that even in a short fall, your body will generate pretty amazing forces on static equipment.
Black Diamond did a great article about it, though they are going through some growing pains right now with a new website. The article was, "Daisy Chain Dangers"
If he attached the lanyards to anything other than a harness, a fall would end poorly. I've seen people mis-rig harnesses - actual paid professionals who got hurried and got stupid - in ways that would have maimed or killed them if they fell.
A snapshot of his setup would have been nice. Not so much for the gear Nazis, but to keep gear on the radar for readers who decide to try this themselves.