This is like "God of the gaps" theology: https://en.wikipedia.org/wiki/God_of_the_gaps
The claimed phenomenon keeps retreating to exactly fit into the gaps of our ignorance. And it will always keep retreating, because filling in the unknown with quasi-anthropomorphic entities is what humans have been doing since long before they invented Zeus and Thor.
Is it possible it's all UFOs or angels or Huginn and Muninn running errands for Odin? Sure. But there is no more reason to favor one explanation over the other. And the world is full of infinite things we don't have enough data to explain.
Why is that particular bird outside your window right now? Why is it singing the song it does? One explanation is that space aliens are using it to spy on you; the birdsong is how it communicates to coordinate observations with other birds. Maybe the iPhone 11 just isn't good enough to show the construction flaws in the feather patterns that would prove it too is a UFO.
But that theory is exactly as valid as "the explanation for this video is UFOs" and we should treat them with equal weight.
With that said, I don't know how we will get beyond "that's neat and I can't explain". My belief is these UFO's are man made or natural phenomena. In order to fully explain them all, it requires us to know what is man made (disclosure from governments), and then study and understand the natural phenomena.
If this was actually aliens, then I don't think we will get past the "this is neat and I can't explain" unless they want us to. The way I reason with it is that it is the equivalent of if we time traveled a fighter jet or submarine to the 14th century. People back then would have no way to reason or prove what they were seeing unless we landed those vehicles and demonstrated to them. Even then, they would probably think the machine were a creation of pure evil or something.
Your "it could be aliens" argument applies exactly as well to fairies, angels, demons, demi-gods, wizards, Satan, time travelers, humans from other dimensions, etc. If you weight one of them more highly than the others, you should examine why. But the answer won't be in the evidence.
I like the liminal theory but this isn't the same thing.
To extend the pirate rapists example from my other answer. Maybe you'd never known a pirate that had raped a person, but I think if you knew someone who told you that story, and you'd heard other people had similar experiences, you'd certainly believe them.
Or maybe not pirates but Trump supporters. Or whatever group fit your priors for likely/payoff for you to do this. So the "aliens are not a smart possibility" here is just an interpretation skewed by the way you want to read signal in the evidence.
It's equal that we can look at the same things and come to different conclusions. That's diversity of opinion and experience. But maybe you haven't even looked at the same things. Certainly we look at them in different ways.
I believe aliens are here. But I'm not saying this Navy evidence points to that definitely. I'm saying it doesn't rule it out. It's smart to keep open to it. I'd say the preponderance of witness evidence over decades without a doubt points to that they are here. Does this evidence prove it? No to me. But I know it. It's what I believe based on my own knowledge and experiences.
You have a different belief is normal. I don't think either of us can claim to be "right" on this topic re evidence (tho about the solar system, what do you think about those weird obelisks? structures on the moon? NASA's history of censoring space photos? Lights on Ceres, on Phobos, on Luna?)
In one view, the lack of solid widely accepted data is why there's so much "meat" to be argued about, but actually I don't think that's the meat, that's just reaching the ground consensus that people will reach different conclusions and I think as long as they do so with an open mind to the evidence that's valid.
I do think you have to admit that what you say about it comes not from evidence, but from your interpretation of it. It's not proven either way, it's just your belief that it's so. And that's all that matters so far right.
This may be becoming less of an issue with the newest generation of cameras.
1. Phone and security cameras are good for objects in close distance. The farther the object, the worse the quality. Best example I have is that I live close to a flight path of a local airport. I've tried to take photos (with an iPhone 11) of interesting airplanes to send to my friends who work in aviation, but the pictures are usually crap. I don't have an exact metric, but I would say its something like every 1 or 2 pictures out of 10 is good enough to identify the plane.
2. There actually are a lot of modern UFO videos on Youtube and the rest of the web that you can spend hours watching. It's just that they are mostly taken with phone cameras, so your video categories will basically be: "that's clearly someone practicing their CGI skills", "that looks like trash/that's clearly a drone", "That's neat and I can't really explain it". I dug through a few popular subreddits and youtube channels last month as we saw an influx of UFO stories in the media and this was basically my experience. It's a fun way to kill some time, but yeah you aren't going to get the high quality videos you want.