I believe in nature.. I don't think the way chemicals react with each other is random.. There may be versatility to it but it's generally the same outcome.. What I'm saying is random is the pool conditions needed to support an amino acid, the building blocks for amino acids being available, the amino acids aligning in a formation that is beneficial to their growth. All the study did was produce a few amino acids, not ones needed for life, a couple actually detrimental to it and not enough of them even come close to a protein. The manor in which these amino acids would encounter each other is anyone's guess, they may never even reach each other in the pool