I will say this:
I would bet money you haven't been a Trad as long as I have, as well as those in my family. My family's "Trad" status goes back to the very beginning of the movement. I am part of Thomas A. Nelson's extended family (he is my dad's uncle). He was a pioneer in the movement.
All of this is to say: I know -- intuitively, deeply, and essentially -- what it means to be Trad. For all the Trads I knew and grew up with, the Challoner Douay-Rheims was the best choice, and certainly did the job. If we needed to "go back further", you better believe that a large number of the Trads I grew up with WOULD HAVE.
I'll share a bit of wisdom with you: When you have an individual who is already seeking the truth at all costs, totally isolated from the non-Trad members of his family and friends, etc. do you really think he's going to stop before embracing "the real deal" like the original Douay-Rheims? Let's face it: none of his non-Trad family or friends uses an old-fashioned translation like the Challoner Douay Rheims to begin with. You think he lacks the moral courage to go all the way or something? What difference would it make? Once you're completely isolated and alone as far as religion, there's not much more you can give up.
It's like downplaying or dismissing the fortitude of the martyrs, since they only faced death for Christ, but didn't face death for Christ wearing a fool's outfit. Do you really think, if it were required or offered to them, that these fearless martyrs wouldn't don a fool's attire as well, if God asked that of them? "He who does the greater, can always do the lesser." If a man can run 100 miles, he can certainly run 100 miles plus an inch! And the distance between the NAB, NAV, KJ, etc. and the Challoner Douay-Rheims is the equivalent of 100 miles. At best, the distance between the Challoner and "original" is 1 inch.
Young upstarts from 2017 discover Tradition in one way or another and they're all fervent and excited, and attempt to out-Trad those who have been Trad literally all their lives. That, of course, is ridiculous.
Young converts are so full of zeal, they immediately go into TEACHING mode when they really need to zip their lips and open both ears, and go into DOCILE, LEARNING MODE for several years, to get caught up with what they missed out on all their lives.
Unfortunately, with pride being a basic human failing (after the Fall), this seldom happens.