You said…..when the truth has always been far less supernatural...

The word “always” in your answer seems to indicate that you know for sure that every phenomenon ever encountered by anyone has always had a very natural explanation.

I do not think that you are right in that assertion.

I agree that there are many people that can mistake natural phenomenon or manmade objects for something unnatural.
I also agree that there are people that deliberately lie or create false information in order to fool people into thinking that there is something strange going on that they have witnessed.
You can deduct all those stories from the thousands of stories that have been published and you will still have some truly fantastic stories that can not be proven to be false.

Why do you consider UFO’s as “supernatural” ?

I consider humans going to Mars as a natural progression of human evolution.

Why would it be supernatural if some ET’s visit us?