John Frame and Molinism

I was reading an old interview with John Frame from TWOTH, and came across this Q&A which I thought was germane for the post I did on defeater(s) for molinism:

14. What differences do you see in the presentation of the gospel with monergists and synergists?

Both typically present salvation by grace alone, and both call upon people to make decisions for Christ. (By the way, there is nothing in Reformed theology that deprecates the importance of human decisions.) But synergists sometimes compromise salvation by grace by saying that human decision is free in the libertarian sense, not controlled by God. If that is true, then as Vern Poythress has said, my decision for Christ is the one part of salvation for which I don’t need to give thanks to the Lord.