For sure there was a pilot helmet fire with the explanation for that awful power up sound just before the ramp strike thud in the video:
"...
Data recovered from the F-35C after the crash showed that after the turn the F-135 engine on the aircraft shifted to flight idle – the minimum throttle position for the engine – and remained there until the pilot attempted to accelerate two seconds before hitting the ramp on Vinson...."
Pilots do make errors for whatever reason. The night F-35A landing crash/ejection at EGLIN AFB by a senior F-35A pilot attempting to land unwittingly 50 KNOTS too fast. What can one say. DON'T DO IT?!
Eglin F-35 Crash Blamed on Landing Speed, but Software, Helmet, Oxygen Also Faulted | Air & Space Forces Magazine (airandspaceforces.com)