Of course the evolutionary process makes mistakes. THe mistakes do not continue to evolve. Those new features that favor survival are the ones that continue to evolve. Evolution is not a state of being, it is a process. Just as engineering is not a product, it is a process. The fact that the Edsel was a failure does not mean engineering is a failure.
LOL.
In this example of mRNA, it would be more like injecting random metal pieces into an Edsel engine.
Besides, show me evidence where any evolutionary process conveyed benefits AND resulted in a new species. It just can’t be found - which leads people like you who have blind faith to speculate that evolution isn’t recorded in fossils because it happens suddenly...which really is a logical contradiction to the theory of evolution of species. You assert but cannot prove the theory of evolution of species; it’s not science because you cannot reproduce it in a controlled environment.
Hebrews 3
4 For every house is builded by some man; but he that built all things is God.
But back to mRNA: this type of experimentation on people (without sufficient animal trials, for example) where there WERE observed negative side effects is and was simply unethical, irresponsible.