"While the estimate of 92 billion light-years comes from the idea of a constant rate of inflation, many scientists think that the rate is slowing down."
Who and how many think the expansion is slowing? DE was introduced to explain the SN evidence demonstrating the expansion is accelerating?
Rod stated: "However, this is 4D space expanding (not 3D space) where all objects with redshifts 1.4 or larger are traveling faster than c velocity in a hyperspace coordinate relative to earth."
Yes. For me, I like to use my magic wand and freeze the universe, then go measure it. This is the distances the article gives as well as you.
It's interesting, as you mention, that at z = 1.4 the break point for photons coming our way come from a region traveling at or very close to the speed of lilght. But, for clarity, this applies to photons from that region that begin their travel to us today. Billions of years ago, photons from that region were not having this problem. Is this correct?