Not the GP but maybe I can help elucidate the position they're representing. The GP advocates for what is known as the "metabolism-first" hypothesis in origins of life theory. The motivation of this theory that some chemists and biologists find it implausible that a self-catalyzing RNA based biological machinery would have formed spontaneously from a collection of basic precursor chemicals, even given very long spans of time and large volumes of precursors. They believe this because nucleic acids are very complex structures and themselves require very complex biologic machinery to assemble, and their understanding of the likelihood of chemical reactions suggests its unreasonable to expect them to form in geological time spans. They posit that instead its more likely that nucleic acid based systems were themselves preceded by system(s) composed of sets of simpler chemicals (ones which are likely to form spontaneously) which together catalyze each other's formation (a so-called "auto-catalytic set"), and that this era of simple metabolisms eventually produced a nucleic acid based system which completely overtook and replaced/assimilated the more primitive auto-catalytic set world.

Here's a primer on the metabolism-first hypothesis: https://www.statedclearly.com/videos/what-is-the-metabolism-...