>>Hard to defend the concept that He’d “just pick someone else” since that would make His plan faulty, which is impossible.<<
Correct. Being God, he knew the answer before he asked. The hypothetical question does not fit. That is why I agreed it was unbiblical.
I only posed the hypothetical because you and others claimed "God would choose someone else” if Mary said No.
How exactly would you have been saved without Mary?
Your post 47 states: “God would have chosen someone else.”
Apparently your idea of God's plan involves Him getting "do-overs"