I don't think anyone doubts that some non-alien flying objects built by humans happen to be both flying, and unidentified by someone taking video of them.

It's not an interesting thing to discuss. In fact, it's the most obvious, mundane, simple, and unsurprising explanation for UFO videos. It's so banal, it's not even worth mentioning.

That's why skeptics talk about how the alien-ufo conspiracies are bunk, and why conspiracists talk about little green men at Roswell. It's way more interesting then 'The Air Force is testing weird air-frames at Area 51' or 'Some pilot somewhere saw some Russian aircraft but couldn't identify it.' Everyone already knows they are testing weird air-frames at Area 51, and that Russians occasionally fly around in airplanes.