Hate Update: You might want to look at this article by a supporter of "RNA World" conjecture in which some of the serious, I would say fatal, problems with the theory are discussed. As the title indicates, the argument seems to be based on what are alleged to be the even worse competing scenarios. This kind of stuff is hardly a secret except to those who make everything a secret through their determined, self-chosen ignorance.
The inadequacy of other, competing ideas doesn't do the first thing to make the idea you favor any better than it is. Considering the possibility that there could be thousands, maybe millions of such speculations there isn't any possible means of knowing where in the scale of improbability the theory you like sits. I will point out that intelligent design is as capable of inventing multiple scenarios that are able to include all evidence science can come up with, not least of all because anything science comes up with would depend on intelligently designed experiments and arguments to support it.
I think origin of life stuff is unknowable and, therefore, any claims made about how it happened are not really science, not so long as it's a claim about what actually happened, 3 billion + years ago in the lost past. Even an experiment that "created" "life" wouldn't get the atheist where they want to.