DD10 quoting something you said in your opening post I'll show you a easier way to blow that argument completely out of the water.
DD10 said,
he had to let things occur/ let man rule himself without Gods help and by this he would prove that man couldn't rule himself, then God would put an end to man's/Satans rule".
If this is so, then why did God interfere with man when he was ruling himself and accomplishing great things at the Tower of Babel?
Even in the New World Translation (JW's bible) look how it is worded at Genesis 11:5-9
"And Jehovah proceeded to go down to see the city and the tower that the sons of men had built. 6 After that Jehovah said: “Look! They are one people and there is one language for them all, and this is what they start to do. Why, now there is nothing that they may have in mind to do that will be unattainable for them. 7 Come now! Let us go down and there confuse their language that they may not listen to one another’s language.” 8 Accordingly Jehovah scattered them from there over all the surface of the earth, and they gradually left off building the city. 9 That is why its name was called Ba′bel, because there Jehovah had confused the language of all the earth, and Jehovah had scattered them from there over all the surface of the earth."
Notice how it doesn't say they were fighting or starving or anything else that would reflect bad on them as a people. They "evidently" were working together as one people and united in a common cause. So God went down there and confused their language so that they wouldn't be able to attain everything else. Notice how it even says, there is nothing that is unattainable for them.
Ask any JW why God interfered here if the issue was to see if they could rule themselves.
So it seems that men were governing themselves pretty good at this particular time. And God did intervene if this scripture is true and accurate.
Edited to add: And welcome to the forum. Enjoyed your first post and like your line of reasoning in it about all the test and how many more times are we going to be tested because of a supposed argument in heaven. Hope to hear much more from you in the future.