"But Adam Had a Free Will."
Attempting to demonstrate that man has a free will, synergists will often say that the will of Adam was free and there is no reason in the divine reckoning to change His design, that of choice on the basis of the free offer of the gospel of the Lord Jesus Christ who gives light to all men.
To which we respond, Adam existed before the fall so OF COURSE his will was not in bondage to sin. The entire debate about free will has to do with the condition of man's heart AFTER the fall. Indeed God's character and commands do not change but our relationship to them do. We now owe a debt we cannot repay. The Bible teaches that after the fall, the natural man is spiritually dead (Eph 2: 1) and cannot and will not understand Spiritual truth (1 Cor 2:14; Rom 8:7) until God sends his Spirit to change the disposition of his heart. Christ did FOR US what we were unable to do for ourselves.
Next, contrary to your charge ... we robustly teach that the church must indiscriminately proclaim the gospel to all men. We never said otherwise. But do so remembering that only God can open a person's heart to understand and believe it (1 Thess 1:4, 5; John 6:63. 65).