Thus, I conclude there are box gremlins who exist solely to sort dirt and rocks inside boxes when they are shaken.
Is that what passes as logic in your world? As bad examples go, it is a very bad example.
How about mine. The simplest cell we know is a self repplicating, self repairing, self evolving programmable chemical factory that produces thousands of proteins under instruction of genetic codes. It is horrendously complex. The function of much of the genetic code is still unknown, how some parts of organsims function is still completely unkonw.
There is no of evidence of the existence of immediate simpler antecedents to that simplest cell, or any structure proposed for them. With all their intelligence chemical plant designers do not expect far simpler chemical plants to work first time. Indeed with all our wit there is no such chemical plant on earth that is similar complexity, if there was it would take decades to build...before being able to refine the next experiment.. In many ways the science of "proto cells" has barely advanced since I first saw it as a schoolkid in new scientist 50 years ago. Same old arguments. Same lack of evidence. Despite a fortune pumped by NASA harvard, and various benefactors all there is is conjecture.
There is also the problem. Irreducible complexity. A hydrogen atom is not self repairing, self evolving or self replication. Because it isnt complex enough. At very least the minimum needs the structures for replcation , it needs a genetic code to evolve, and the processes to interpret the code. Remove parts of that structure and it the irreducible cell is dead in the water. Obviously. Because It neither replicates or evolves. Without which there is no life. How did that happen? With no designer?
As for random chance origin of it all - there is no heap of debris of nearly working (but actually failing) chemical factory cells, or a long line of simpler almost cells for for there to be a random chance that one of them works by pure accident. Since there is no guiding hand in your world there must be a near infinite number of failures for just one to be lucky enough to work. And that process should be continuing. But There is nothing. No designer to build it or turn it on. Just a few plausibility arguments for how some bits of it might possibly happen. ( with a following wind and lots of optimism, and even if those bits are shown that they might have happened, there is still no evidence they actually did happen or happen that way!)
So the reality is you know nothing. All you have is conjecture and the ability to marvel at the hideous complexity of nature, with no idea where any of it came from.
Certainly not by shaking rocks in a box, with or without your magical gremlins (whose existence i am inclined to doubt).
Your guesses on origin of life are just as much a faith, as anyone else. The entire field of abiogenesis is assumptions repeated so often they have gained the status of fact with not a shred of evidence any of it ever happened. It just has to have happened right? Or the atheist thing falls apart without it!