An honest evaluation of the studies leads to the conclusion that the formation of RNA could not have occurred through any natural processes on the early earth.
A review of the topoisomerase family of molecular machines that repair DNA ignores where they came from. Another article tries but has no answers.
Sixty years ago, philosopher of science Thomas Kuhn listed what he described as the “symptoms” of a research field undergoing destabilizing change.
It would be as ridiculous to lump all of these into a single genetic code as it would be to lump Morse Code into the genetic code.
As usual, evolution-talk is inversely proportional to the amount of detail presented about cellular workings.