And I agree with that completely. When I arbitrarily defined the “stages”, the first few may not have required design, but only natural processes (who knows). There are now sound theories for a natural developement of a membrane and nucleotides for the first life. But at some point in the “next stage(s)” more is required and has been a complete and total to scientists. That point may have been the RNA synthases. After that point, evolution could have occurred without further intervention.
I’m not saying that there wasn’t any, just that it might have been unnecessary.