In reply to althesin:
As I saw it, they didn't abseil of a jammed knot, they nearly used this to create a hand line in order to get close to the edge and look for a way down, they abseiled off a bowline around a boulder though I saw no sign of a stopper knot.
Re the via ferrata on slings, they were traversing so there was no danger of a vertical fall coming to an abrupt end on the next bracket.
I'm not trying to defend the guy, just that any mudslinging needs to be factual and as others have said, this is a tv production aimed at a target audience. I'm pretty sure most actresses don't wake up with perfect make up and hair yet that's how is always shown on the tv. Till I've met/spoken/climbed with the guy my opinion shall remain open in the knowledge a lot of what he does on screen will be s much the will of the producer/director as his.