That would then make spontaneous generation an unfalsifiable theory. It should therefore be rejected immediately as unscientific.
This is faintly ridiculous. If life were such a foregone conclusion, then we should have been able to create it long before now. I mean, we have the finished product available everywhere for study and the reverse engineering is pretty straightforward for the simplest bacterial cells. We know pretty much all the important chemicals and how they're put together. Quit worrying about what the primordial Earth was like and just create the optimal conditions in the laboratory and create self-replicating molecules that you then guide with artificial speed into bacteria. Create the life, already, then worry about finding the mechanism that was in place on the primordial Earth.
Oh, wait. Even with everything we know about biochemistry, and the ability to create the perfectly optimized lab conditions we still can't create spontaneously forming complex organic, self-replicating, information carrying moleules. So instead, we'll get grant money for red herring experiments where we'll cook methane in a clay matrix to make hydrocarbon chains and ignore all the organic chemistry professors that look at us and say: Well, duh, what did you expect?