Ok, I have some time to respond. However, you brought up a lot of good points. Rather than trying to tackle them all at once I think it would be better to break it apart and tackle the parts one at a time.
But why would Satan prefer to have the truth plainly visible to all humans and then try to distort it rather than simply obscuring the truth entirely so that no one can possibly know? There is no way the father of lies would prefer to have the truth plainly visible to all.
The answer to this is that Satan does not want to hide the truth. He wants to distort it. His ultimate goal is not to cause people to die in hell (although that is part of his motivation), he wants to dethrone God and take all the worship for himself.
12 How you have fallen from heaven,
morning star, son of the dawn!
You have been cast down to the earth,
you who once laid low the nations!
13 You said in your heart,
“I will ascend to the heavens;
I will raise my throne
above the stars of God;
I will sit enthroned on the mount of assembly,
on the utmost heights of Mount Zaphon.
14 I will ascend above the tops of the clouds;
I will make myself like the Most High.”
15 But you are brought down to the realm of the dead,
to the depths of the pit.
You see, he wants to distort the scripture in order to direct the worship to himself.