If it was a fake video I'm sure the makers would be sure to show pieces flying towards the camera with clear markings on it to 'prove' their point.
Not that I'm taking sides, just pointing out that the whole thing is still very far from clear.
Well, that's the problem. If they didn't see it firsthand and in person themselves, they immediately claim that all photographic, video, and witness testimony is fake. As a result, there is NO WAY to prove them wrong because they deny everything from everyone from everywhere.
It defies statistical probability and logical deduction. Sometimes it even defies science.
What is there to gain from this? Brainwashing. Malleability of the minds of the masses.
By constantly casting doubt on science, facts, evidence, logic, personal experience, etc. they prompt the masses to begin doubting everything including themselves. Once that kind of doubt sets in, people begin losing their grip on reality. when that happens, they look for some bastion of stability and surety to cling to. That's when they become open to suggestion.
It's called "gaslighting" after the movie Gaslight.
Cult leaders have been infamous for using this.
Stockholm Syndrome is a derivative of it.