“. And almost all Protestants took the approach that God saw sin on the Cross, not an obedient Son.
I believe you are twisting our words there. No one said God did not see an obedient son. Or that God saw sin on the wooden beams he was nailed to.
For all of eternity the son was with God and for a “split second” in the spiritual realm God turned his face and it was far worse then the nails in his hands and feet.
I recommend a rereading of the posts on this thread. Very many said exactly that.
Care to cite your Biblical source?