Calvinism, Arminianism, Molinism, Supralapsarianism, Infralapsarianism -- these theologies, IMO, make things way more complicated than is needed.
I can remember Senator Sam Irvin in the Watergate hearings asking "What did the President know and when did he know it?"
Theologians seem to me to try to climb back into the mind of God in Eternity past, asking "What did God know and when did He know it?"
Elaborate sets of DECREES that God supposedly gave are laid down by Calvin and/or his followers and by Arminius. To me the first primordial DECREE that God gave was "Let there be light". But regardless of how allegorical and metaphorical, OR how literal -- were the creation accounts in Genesis -- we deduce that there were some things in creation that happened before the Genesis accounts.
Angels were created and already exist before our creation accounts. Satan was created, and fell. Some of the angels fell and sided with Satan.
The ancient church simply repudiated Pelagius and his idea that "man could save himself" but they also rejected the Double Predestination of Augustine -- that God, sitting there in Eternity past, decreed that person X would be forever saved, regardless of what he came to think, believe or do; and that person Y would be forever damned/reprobated, regardless of what he came to think, belive or do.
That 'absolute decree to eternal reprobation with no regard whatsoever for what a person did, thought or believed' is an idea about God that I find intensely repugnant. I reject it - the ancient church rejected it - Arminius rejected it. So I call myself an Arminian, though I cannot claim to understand every little thing taught in Calvinism or Arminianism.
The BIG DEAL is that to me God does not arbitrarily doom a person to hell or arbitrarily destine them for heaven.
The Reformation brought all this up again after a thousand years because Calvin brought out Augustine's double predestination, long ago rejected by the ancient church.
Other things in Arminius' writings on chapter seven of Romans confirmed to me answers to things I had long been uncomfortable about and wondered about. How could Paul - 'brought up at the feet of Gamaliel' - say autobiographically of himself that he was 'alive without the law once'?
Well Arminius explained that Paul was NOT speaking autobiographically in Romans 7, but hypothetically putting himself in the position of an unregenerate man.
This and other statements by Arminius in his commentary on Romans 7 and Romans 9 blew out of the water for me this 'O wretched man that I am" theology where even the apostle Paul, saved and saving others, starting churches and overseeing them, remains in a state where 'the good he would he is unable to do'.
So now as I just now begin to read modern Arminian authors and sometimes think "where did they get THAT out of what Arminius wrote?" -- I fear I will see that more and more, the more I read of the modern Arminians.