I don’t think the existence of an omnipotent being existing negates free will. At least not if we are talking about the God of the bible. According to the bible God gave human beings dominion over the earth.
I look at it this way. You have countless people in our human society that have power over you, but that does not mean you do not have the ability to freely choose to behave in certain ways. A supreme being does not automatically mean we have no agency at all.
I said if God revealed himself to every one perhaps I should have said visibly appeared or used some method that every one accepts this is a being that exist and is not an hallucination or a voice in any ones head. When he manifest or shows himself there will be no doubt hat he is not a hallucination.
At any rate, considering that fighting for freedom is usually considered justifiable, I don’t see any virtue in “peace” gained by being reduced to automatons and losing even the capacity for freedom. This is a proposal that would justify a war to stop, up to and including a nuclear war if necessary.
The destruction of civilization or even the species would be a more desirable outcome.
I need to know more about the extent and the way this free will is being curtailed. I could imagine setting up a Star Trek style transporter system whereby all missiles and grenades are automatically beamed to the surface of the sun, combatants are beamed back home without weapons, etc. That would eliminate the choice of making war - a restraint on our free actions or ability to do certain things - but it wouldn’t be especially disturbing.
You could also imagine that those who freely choose to put themselves within an organized military structure to lose their free will to the extent that at any time they could manipulated by The Good One to do whatever like zombies or perhaps marionettes. (I’m thinking of a subplot in the anime Jujutsu Kaisen.) That manipulation would end if they freely chose to leave their military organization. So there would be no more war, only terrorism.
There are other possibilities and I would need to know what exactly I’m signing up for.
“The Peoples Republic of Freedonia has no choice but respond to this outrageous provocation by ZING! no we don’t, we’ll back down now.” You get some free will, but only like 5 seconds of it.
ETA below: Basically agree: I alluded to the possibility that banning war has all sorts of loopholes embedded inside it. Again though, it depends on the details. Say terrorist organizations are permitted because those are NGOs. You just can’t use weapons and be part of a government at the same time. Organized non-police violence is privatized. I haven’t thought that through but is sounds worse in some ways.
A likely possibility is that dictatorships and slave states become impossible to overthrow, because the oppressed populace can no longer rebel and outsiders can no longer intervene.
It is interesting that Marvel Comics is exploring this issue throughout most of their comics. The story is that Dr. Doom has managed to take over the world, establishing a benevolent, but complete, dictatorship. The ability to chose leaders is gone, but general well being is up overall.
Apparently Dr. Doom took the office of Sorcerer Supreme from Dr. Strange, retired to the nation of 20th century Albania, Latveria for six months, then proceeded to take over the world. Wiki has a helpful summary:
Roughly six months following his ascension as Sorcerer Supreme, Doom announces that all the world is now the global country of United Latveria and that he is enacting a welfare state agenda in which he declares war illegal, mandates free universal healthcare, and offers free public education to all people of the world. In response, the Avengers meet to oppose Doom, believing that he is either influencing world leaders via mind control or has them replaced by robotic duplicates. Meanwhile, Helmut Zemo attacks Latveria, but is killed personally by Doom and replaced with an obedient Doombot replica who surrenders Hydra to him. In addition, Doom claims a Tyrannosaurus variant of himself from an unidentified parallel universe where dinosaurs never went extinct to serve as his steed.
I’m no fan of the Doom administration, but I thought the Tyrannosaurus was a nice touch.
During an emergency, in which Doom — who knew what needed to be done, but lacked Strange’s sheer power — swore an oath to return the mantle of Sorcerer Supreme once the world was saved.
Doom later noted that, well, he hasn’t finished saving the world yet, has he?
To answer the OP, first I would define “free will” as the experience of choice. That means I weigh the issues and choose logically, or I decide to flip a coin for the answer, or I ask somebody and then do the opposite, or any other means of acting on my own volition.
For purposes of discussion, that would make succumbing to blackmail or to prevent torture technically an act of “free will”, though I works still call it coerced behavior.
What remains to be answered first is, what is the nature of this “world peace”? No more war? No more violence?
Second, what would this experience feel like? Would it be distressing to be feeling one’s body start doing things or not doing things that you are trying to do? Or would it just be the “inner angel" winning or over the “inner devil” every time?
Or would it take away the expectation of choice?
Would life be basically the same except for a few decisions or would experience be like being locked in a box that does things on its own? Or works would it be like a zombie - no more identity or self?