Scholar,
"Jer. 25: demands careful exegesis which I have done "
So how did your careful exegesis lead you to equate the destruction of the first temple with the start of 70 years? You seemed to skip over that part of my question which you quoted in the reply above.
"It cannot be a period of Babylonian domination because we cannot determine a precise year as a beginning of that Period."
How does our inability to determine the exact start date the writer of Jeremiah had in mind preclude the idea he was talking about a period of Babylonian domination? This looks like a non sequitur.
Besides, didn't you tell me the precise time was when Babylon conquered Jerusalem making it a global power?
"even COJ is confused about the matter shown by comparing his discussion of both dates in his 3rd and 4 the edn of his GTR."
Isn't admitting to genuine uncertainty over plausible alternative dates a better and more honest approach than proclaiming certainty over an implausible date?
"Criticism is fine and has its place but . . . you must argue your case or thesis in order to be credible"
Jeremiah doesn't tell us a start date. Doug has pointed that out.
"The Bible does not state ―this is when the Seventy Years‖ started, showing that those people were not
concerned with identifying a specific moment or incident"
Page 14
https://jwstudies.com/Critique_of_When_Was_Ancient_Jerusalem_Destroyed.pdf
That is the case he's arguing. Like most others who've spent mch time on this, he seems to have concluded that there are a few possible options which could mark the start of the seventy years. He also spends some time trying to differentiate between the seventy year period of servitude and the idea that the destruction of the Jerusalem and the temple which would only happen later if Judah didn't mend its ways. That makes it clear that in his view, the destruction of the temple could not mark the start of seventy years.
As far as I can see he has backed a horse. The horse is uncertainty in the scriptures.
Doug, if you'd like to respond to that please correct me if needed. I don't want to misrepresent your position.