Yes, obviously the FAA/NTSB/whatever agency needed the remains of that plane to prove their case that the crash landing was staged.

I don't think that the video alone gets past the reasonable doubt standard.

What’s the angle? The fuselage doesn’t crumple one way if it’s staged and another way if it was an accident. The metal and construction materials cannot know intent.

It should still be possible to find out if there was a problem with the engine before the crash.