They don't need to be "supreme authorities" on anything -- they have insane technology acting as their eyes and as their objective measuring and tracking systems.
2) The burden of proof is on those who make an extraordinary claim. There is a perfectly mundane explanation of the cause of apparently fast-moving object which is supported by available evidence. Even if that depends on some assumptions, you would have to demonstrate those assumptions to be false before a less likely alternative, i.e., that it was an extraterrestrial spacecraft, should be adopted.
To make the extraordinary claim more plausible, you have to rule out the more mundane possibilities. Prove it's doing something unusual. Until then, "we can't prove it either way" doesn't mean there's a 50/50 chance.
It's like the Flat Earth documentary where a group crowdfunds an absurd laser and, when it demonstrates the Earth's curvature, reason that they need to "troubleshoot" that 'flawed' result.
There is always a hand to wave.
It could be a Chinese drone with rat-cell-on-a-chip inside it
The guy's testimony was that somebody told him stuff and it seemed scary. Congress made a dog and pony show that a significant chunk of people attended.
Parse the details, not the overarching fantasy.
The government admitted to doing this in the 70s-90s to keep not-so-strange technology hidden behind The Strange. Trim with Occam.
The ticTac videos aren't interesting if you look at the limitations of perspective and remember that Air Force pilots aren't supreme authorities for objectively assessing parallax and assigning airspeed to all moving objects while flying a fucking cracker attached to a rocket.