It's a misunderstanding of both what the supernatural is as well as natural/science. Whatever can be detected is science. So if science would be able to detect anything supernatural, it would stop being supernatural. It would just be natural. By definition, supernatural is something that cannot exist. This is by the definition theologists themselves formulated. A force that doesn't interact with anything in the natural world can just be ignored, by both scientists and religious people.
Would you consider the concept of a poltergeist to be supernatural? They apparently can interact with the natural world....
If it, in any way, can be detected it is natural. If it cannot be detected in any way it has no impact on this world, what so ever. If it has any interaction with the natural world, no matter how minute, it is natural, and not supernatural. The moment God got involved and nudged evolution his action is immediately included in the definition of science and is a natural force. Not supernatural force.
It comes from Aristotle's metaphysics. He described the laws of nature in his book physics, and then he fit all the other stuff into his second book, "metaphysics" a grab bag of whatever didn't fit in his first book. Metaphysics literally just means, "after physics". Meaning after the book. "Supernatural" is the same expression in Latin.
His physics book describe
how the world works. His metaphysics explores the more esoteric subjects of
why and what rules define physics. This is where he defines logic. But it's really just a bunch of wild speculations and philosophical musings. It doesn't have nearly the same dignity as his physics book.
More softheaded people took this Aristotelian concept and made it into... well... magic. Before Aristotle God and the actions of the gods were seen as poetry. It was inherently mysterious and defied defining. Gods were unpredictable and there was no way of knowing whether your actions would please God. God was a label we used interchangeably with "the unknown". After Aristotle philosophers started studying God like they would any scientific concept. It's this movement, (Philo of Alexandria) that invents all the concepts which later make it into Judaism, and then Christianity. None of it makes any sense. The peak of this lunacy is Thomas Aquinas. I highly recommend reading his work. To the modern, secularly schooled, reader it sounds retarded. But Thomas Aquinas was preaching to the choir, so they canonized him as a saint instead.
Bottom line, nobody has ever had anything intelligent to say about the nature of god. At any point in history. People's urge to want to know, made us fail to stop and think, at some point, which created a slew of theological treatises where it's clearly defined what needs to done to ensure entrance into Heaven. While nice for those among us who are a bit neurotic, isn't exactly helping. It's better to go back to what God used to be, a stand in for the unknown and mysterious. And just make friends with that instead.
You've said before, you want to know what the intelligent force ruling the world wants from you. No matter if that force is out there or not, you will never learn this. That information, has never in history, been forthcoming. I think it's a pretty safe bet that the various prophets who claimed divine inspiration were just full of shit, or had deluded themselves. They were just pandering to the needs and insecurities of people around them.