The problem with the entire premise of this article is that the Scott quote is garbled. "We've reinvented the idea of Alien, which is that Covenant gets us a step closer to who and why was this thing designed to make human beings" doesn't make any sense. Why was WHAT thing designed to make human beings? How does the question of who 'made human beings' reinvent the idea of Alien?
My best guess is that the quote is simply missing the word 'afraid' at the end, because of a transcription error. Other accounts of Scott's speech make it plain that 'this thing' is the Xenomorph. He's talking about horror here, not the origins of humanity:
'Seven guys and gals in a steel hull. Frankly, the very old idea of The Old Dark House. Who's gonna die next? The fundamental basis of Alien was a pretty old B-movie, but because of the cast and talent involved it came out an A+ movie. So we've reinvented the idea of Alien, I think, which is that Covenant gets us a step closer to who and why was this thing designed to make human beings afraid.'