Been thinking about this further. Any intelligent alien civilization that visits us would most likely be using faster-than-light travel of some sort to be able to make it to Earth in a reasonable amount of time, so that civilization would have to be far ahead of us technologically. And they'd actually have to travel much faster than light to make their trips convenient, so their technology would be preposterously more advanced than ours.
Meanwhile, the stuff in the footage being described with breathless wonder as being far beyond what we have today is, at most, I dunno, 200 years out--if that? "Oh boy, that blob sure is moving kinda fast, those aliens must be gods!"
Do you really think that an advanced alien civilization that visits Earth is, by some bizarre chance, only a few hundred years ahead of us technologically? Given the age of the universe, for any reasonably close alien species that's more advanced than we are, odds are it's going to be at least millions of years ahead of us technologically. I can't imagine human technology 1,000 years out--that's already god-like. But millions of years out? Forget about it. We're not even human anymore at that point. We're probably not even physical, or visible. I don't know what we are. We most likely don't have physical "ships," or "travel" in the sense we think of today, or do any of the things we do today that we naively try to extrapolate into the future.
With the above in mind, do you really think that 1) an alien civilization millions of years ahead of us technologically 2) would simply send a bunch of blobs doing vaguely impressive stuff, and 3) be dumb enough to let them be seen by our rudimentary million-year-old cameras? Sorry to say it, but that's a spectacular failure of the imagination, my friends.