Well we do not agree. Twice prior to the Word's incarnation He is said to be "with God." If that is not a subordination being someone other than God, explain to me why you do not understand that to be the case.
Also 1 Corinthains 15:28, ". . .
And when all things shall be subdued unto him, then shall the Son also himself be subject unto him that put all things under him, that God may be all in all." Where the Son is for the remaining eternity in subordination to God. And in this He the Son is still God too. Hebews 1:3.
Repeating gibberish. What is your simple proof that He is the eternal Son before His incarnation from holy Scripture?