Yea, for the Calvinist I see where he would think that's a bold statement.
I know you don't claim to be a Calvinist, K but you do claim the 5 pts. of Calvinism.
You look at 2 Thes. 2:13 and see God appointing/selecting man for salvation, but that's not what Paul said, and neither did he say that in Eph. 1 or Rom. 8.
He said that God has from the beginning chosen you to salvation THROUGH sanctification of the Spirit.
He chose us to be saved through the plan of sanctification, this is His plan of how he will be saved.
God in His great foreknowledge knew what Adam would do with the free will given him, He knew that with free will the lust of a man will rise to the occasion of sin. But God doesn't want a type of robot to love and serve Him, He wants man to love and serve Him of his own free will.
Before He created Adam and knowing what would happen, He formed His plan of redemption for man who would believe Him of their own free will. This plan included a reconciliation of the broken relationship between Him and man through disobeying Him. Adam, by disobeying God has fallen from an innocent standing with God to a fallen state of sinfulness, spiritually separated from Him. The Law of Sin and Death must be upheld by God or He is a liar.
Man sinned against God and man must make the reconciliation, but all men are sinners and can make no reconciliation, we are doomed by the Law of God from the foundation of the world.
We all know how God sent a man, and He had to be a man, to intervene for man to save us from sure destruction, the wrath of a Holy God on sin.
So we have a completely different understanding of what Paul is teaching in his letters. You and I go in separate directions of the instructions of Paul based our differences in our understanding of Eph. 1, Rom. 8, 2 Thes. 2, etc.