Nicely summarized!
For those unaware, this is the 'information first' theory.
There's also 'metabolism first', looking for possible situations in which something that started out as pure chemistry could slowly become something similar to what cells still use to turn an energy gradient into both a smaller, more usable one - and the materials needed for independent life. The leading one of those centers around chemical reactions in hydrothermic vents with a strong Ph difference across thin materials.
This matters because if metabolism (i.e. the Krebbs / CA cycle) was something life invented, then maybe we can come up with something that works better, lets us live longer. But if it's metabolism-first, then we're stuck with Krebbs as that's utterly central.
Metabolism-first was first proposed by William Martin in Nature. The abstract is here: https://www.nature.com/articles/nrmicro1991
The full article is behind Nature's paywall, but you can get a copy of it as a PDF from ResearchGate: https://www.researchgate.net/publication/283969043_Hydrothermal_vents_and_the_origin_of_life
For a more approachable explanation, I'd suggest Nick Lane's "Transformer".
If you don't want to read through any of that, my simplistic-to-the-point-of-probably-being-wrong goes like this:
Early on in Earth's history, before there was appreciable oxygen, there were subsea structures in which rocks with iron content were being transformed into serpentine, a 'hydration' reaction that releases energy. This results in plumes of slightly warmer water, heavily laden with dissolved minerals and loads of protons. The minerals build up into elaborate structures, sometimes quite thin, with high protons on one side and lower (seawater) on the other. All life functions via this 'proticity', this electrical differential across something thin. For us eucaryotes it's buried in mitochondria (but that's a whole 'nother mystery).
Now, if you look at the Krebbs cycle, like any chemical reaction it can go either way, so at least parts of it could have been creating some of the basic 'bits' needed for life away from the vent, notably phospholipids, which self-organize into sheets or membranes in water. As these 'blobs' divide, parts of the original are in each, so effectively a 'membrane memory' - which cells today still have. Once we have information storage, any kind of differential survival situation results in selection pressure and population change (i.e. evolution).

PS: If any one of you 'metabolism first' folks is reading this and I've gotten some (all?) of this wrong, I'd appreciate a correction.
Also (trivia) I leaned Milller-Urey in HS biology in the 60s, even replicated it in the HS lab for a science project (I lost because I suck at presentation materials). But, thinking about it, it just turned a simple elemental 'soup' into another 'soup' with more complex potentially-useful-for-life molecules. And we're discovering that the prebiotic environment on earth was not the elemental soup Miller and Urey had proposed. Yes, amyloid is an answer to much of that, but so is metabolism-first.

Apologies for having gone on so long, but this area is one of the things I'm utterly fascinated with...