I never knew anyone who stands around filming a random night sky waiting for a plane to blow up.
Nothing random about that night. He was probably trying to film US aircraft on bombing runs.
I think it was John Kerry taking the video on his phone after his buddies launched the missiles.
They don’t have NASCAR over there, so this is what they do............
I understand your point, but “aircraft spotting” (like train spotting) is a thing.
There are people with the time and inclination to watch aircraft come and go from airports. YouTube is full of their videos.
Now, whether that sort of thing goes on in Iran...
...Or it might be video from someone’s SO watching their plane take off.