Who else is going to submit evidence? The police. With proper chain of custody documentation, etc.
Awesome, so the cops are the only ones who are allowed to submit evidence? You're an idiot.
You know that whole 'beyond a reasonable doubt' thing? It is real.
Except a case like this wouldn't be held to such a high standard of evidence. This would probably be held to a preponderance of the evidence level. It's more likely that the video is real, seeing as you can see landmarks and there is no obvious signs of editing than he went out, bought a new drone just to fake a video and crash the drone himself....
Ah, so the 'testimony' of one person, who has every reason to lie, outweighs the testimony of two people who presumably had no reason to lie. Makes perfect sense.
The drone operator isn't on trial, not only that, eyewitnesses have been proven to be extremely unreliable, so: video evidence + person to testify of it's origins > two unreliable witnesses.