I could believe that if the channel had a history of that kind of footage. But I just skipped around a few past videos (actually most of the channel content is not about flying) and couldn't see one.

I'll let FAA assign blame, but sure does seem like he added that angle because it seemed like a cool shot for the crash.

Edit: Also, he doesn't seem to fly with a full parachute normally, for example: https://youtu.be/OnOrfJo2LE0?t=253

Not only it's not unusual for a Youtuber who frequently posts videos of themselves flying, but it also would explain why they would trek to the crash site, to recover expensive equipment, especially if the crash was nearby (which it was due to the plane turning and coming back and almost hitting him).

That's not so unusual. Tons of student pilots mount external gopros for routine training flights these days.