Actually, CG, I used the term in the classical Greek way. I am particularly fond of the philosophy produced in ancient Greece by thinkers such as Heraclitus, Parmenides, Pythagoras, Socrates, Plato, Aristotle. They were familiar with the term logos as denoting the meanings reason, intellect, mind, ratio (with its mathematical implications). It is (as you point out) the etymological root of the word logic.
Maybe you are of the persuasion that reason was a discovery of the Enlightenment period. It seems quite clear to me, in contrast, that reason had been discovered in mid-first-century B.C., in Athens. It seems clear this was the first historical period that gives evidence that human beings had isolated and described this thing "reason" — and they called it logos.
I don't need to point out again that this logos is, by nature and definition, nonphenomenal, nonrandom, immaterial, and "transcendent." This appears to have been the consensus view of the time, and the settled meaning of the word for a couple of millennia.
I am not talking "metaphysical banality" here, but of something that (evidently) your blind spot does not let you see. But if you've never been a student of human cultural history, then one can't blame you for having a "blind spot." Maybe it's just a lacuna that your experience in the future will supply. I hope so.
cheers, CG. Thank you so much for writing.