What makes a Black Hole supernatural?
If you mean that supernatural is something that is out of the reach of our observation, then I don't have a problem with your definition, but then know that your definition is vacuous because it will always be true in such a way that it never gives new information. It would essentially be a word that describes a perspective rather than an objective truth.
For instance, if a rock was something that had never been witnessed by humans before, it would be supernatural by definition and the moment that someone discovered it and documented it, it would then become natural.
so it's a vacuous truth at best.
If you're using a different definition, then I apologize as I don't quite know what is leading you to black holes being supernatural. If you'd like to elaborate as to what makes it supernatural, then I can either better understand your statement or at least tell you why I disagree with it.
Wait what are you saying about RNA? I don't want to try to sum it up because I feel like I would take you out of context.
Are you saying:
A) RNA forms under gravity?
B) RNA forms in black holes?
C) RNA forms due to dark energy?
D) Some combination of A or B or C.
E) Either A or B or C or D but instead of the word "forms" replace it with "coded" (In this case, I don't know how to interpret the worded coded, please explain)