I scanned a bit of the video until I saw the reserve chute dangling.
I then backed up to see why he deployed it. Seemed to be accidental. Probably why the "Whoops!" was used in the lead in post.
Man-O-Man! Having two "chutes" deployed as you descend toward ANY challenging terrain looks like it could complicate matters. Obviously the guy in the above video lost all/most of his equipment to that remote mountain location. Add that to the cost of rescue! $$$$$$ I had a bad landing in 2012 and "jarred" my cranium. Local EMTs figured I should be air lifted to a hospital 60 miles away. The bill was $30K+. I wonder how much an expert helicopter mountain rescue would cost? The equivalent of $50 - $60K?
Hang glider pilots have also accidentally deployed their chutes, so this incident connects with both sports. And a PG is also more likely to "snag" on rough cliff faces - so maybe that's a GOOD thing!