One thing in these comments I haven't seen said: F*K that plane. Off runway landing has significant risk. Parachute is so close to 0.0 risk that you do it just for fun on a day off. I wouldn't do an off runway landing just for fun on my day off.
The thing is staged, no question. The guy knows he messed up and will pay for it. But if I had to decide between my life and protecting a bunch of metal tubes and (fabric | aluminium, not sure), I know what I would do.
The whole thing looks planned, but if I were in the same situation I’d definitely be jumping over trying to crash land a cheap plane in a riverbed or clearing.
This sounds pretty scary though… If you were an experienced skydiver, with your gear on, don’t you think you’d be tempted to jump instead?
Experienced sky divers get to choose their jump points and landing sites. They don’t get thrown out of the plane at an arbitrary time with no preselected landing side.
You would controlled crash the plane because you would know that jumping over mountainous terrain with vegetation is a great way to break a bone which is going to make getting the heck out of there really, really suck.
A plane like pictured is going to stall at like 40mph so that will be your approximate crash speed, which is really damn survivable in an aircraft with a 4pt belt to keep you off the hard bits of the cabin.
Risk of some bruising and maybe a concussion beats risk of broken ankle any day.
I would have attempted a controlled crash over gentle mountainous terrain like this. You want to dump the aircraft's kinetic energy rapidly but not suddenly -- gliding into the side of a cliff will kill you, but keeping the airplane pointed forward while shearing off the wheels and crumpling the nose is fine. It looked like there were several areas where this would have been relatively safe to attempt. You don't need a nice flat field for a survivable crash.
After you're on the ground, you also need to be able to survive (possibly for days), and then be visible enough to be found and rescued. Staying with the aircraft is usually considered the safer approach, both for visibility as well as the emergency gear that you're supposed to be carrying in the back.
The only terrain where I'd seriously consider bailing out (assuming I had a parachute) is dense forest with no clearings. Surviving a crash like this is incredibly difficult -- you hit a redwood, shear off your wings, and then plummet 250 ft to your death. It'll be hard to spot the wreckage of a small plane from above. Even with a parachute, there's a serious risk of getting stuck in a tree (or impaled by branches). There are basically no good options here.
In short, mountains aren't so bad. But be super careful flying over forests. If this video was a stunt, there's a reason why he decided to stage it over mountains rather than a forest.