They are taught this at the Gilead school, this could have been one of the brothers that does the teaching.
With so much ttatt available today they are prepared to discuss the past with the wheelies. They put their slant on the information. They are so happy to use the past to show how far they have come. They have no shame in spinning it any way they can.
They even say that God knew what his people needed at the time, that is why the charismatic Russell led the people initially and the tougher Rutherford took over.