I don’t think James White makes that argument. I think he makes the argument that it is a medieval insertion into some Greek Manuscripts *based* on the Vulgate. If you have a video in which he says something to the contrary, post the link, but I have listened to him talk about many times, and don’t recall him disputing that it goes way back in the Latin tradition.
I dont think we are disagreeing. Perhaps I stated it poorly. There is no early Greek manuscript evidence for the CJ. It first appears out of nowhere in the Vulgate.