Nope, this thread is about backdrop only.
As I said previously, a Calvanist on another website, knew much of the 'backprop' as you put it, but was lost , in fact he didn't even bother to discuss the Gospel of Grace, and when you put questions to him on it he refused to answer
I wonder if it was something to do, in his case, with his sidestepping of discussing the Holy Spirit, and continually ridiculing the gifts of the Spirit for today, It seemed to me that his Trinity was Father, Son and the Bible. But he believed he was qualified to teach the word, and, to use his words, 'stupid people like truck drivers were not'
To me, you can have all the theological discussion you want, but only the Holy Spirit can lead into truth, and it is those that don't rely on him that cannot even grasp the very basics of the faith, vs proved on websites like these. Though noticeably this is not the case in the overwhelming majority of Christians in churches, and thankfully only concerns a few even on the internet. I will leave you to your theological discussion