I saw that. Which is why I wrote extensively about what that phrase means.
So then Jimmy Swaggart, David Koresh, Ted Haggard and Joel Osteen could all be considered to have "divine agency".
But then you have stripped Jesus of his DIVINITY which is crucial in the faith.
Clearly your use of "divine agency" without any definitional limits on the terms is correct, but it does not in any way point to a divinity of any sort. Just that he spoke about the divine.
"As Ehrman now explicitly says, identifying “Jesus as messiah, as Lord, as Son of God, as Son of Man–[all] imply, in one sense or another, that Jesus is God.” And yet “in no sense” does that mean he was “understood to be God the Father” (p. 208)." (
Carrier)
The kings of Israel were often referred to as "Sons of the Lord". In 1 Sam God offers to make all David's descendents his "sons". As such the "son of God" doesn't seem to be overly limiting.
I will agree, many people in a theology can have "divine agency". But none of them are the lord and savior of all humanity.