In light of recent research developments and argumentation (some of it reviewed), his views should be considered a welcome addition to the many ideas that populate the “origin of life” field of inquiry that counter the dominant paradigm.
In relation to comments of Line 188 onwards, Di Giulio, Caetano-Anolles and others have suggested that the genetic code started to unfold prior to LUCA but continue to do so once life diversified. The corollary, is that the complete canonical set of amino acids may have not been encoded in LUCA. In terms of metabolic and biochemical competency, there are numerous and interesting studies, which have not been cited (especially in origins and evolution of modern metabolism). This includes the coevolution theory of the genetic code, the coexistence of prebiotic chemistries with modern metabolic reactions (recently studied for nucleotide metabolism), and theories about the origin of translation.