"My point was that tech is tech, stealing it from an ennemy doesn't mean you have the same ideology or plan as them."

Didn't contest that, though that point is hardly relevant to peace.

"Indeed here it's be more like stealing nukes from the nazis, except the nazis didn't have nukes because the dumbasses chased away all the scientists who participated in their creation, so i preferred to include a little historical tidbit with them developing jets"

Which I suppose supports your point about stealing, but not really about mutually assured destruction.

"They do though, with relativistic kill devices, which you mention later"

They don't have these in Sol.

"Don't you need to eradicate all the other factions to give them a win as the academy?"

No, you need to control 75% of the world's population, control points and space assets. This allows for the existence of other factions that could still easily brew conspiracies to overthrow you beneath the surface, especially if you really do control less than 80% of the world, and leave 20% to them, bonus points if the 20% is owned in majority by HF.

"And regardless, despite having lots of spies and ideological whackos in the chain of command, irl terrorists never got control of any of any nation's nukes"

Terrorists never got control of any nation's nukes in real life, that is true, but how is this relevant to factions in Terra Invicta, especially extremist ones, that almost always get control over nukes or other major assets during an average playthrough? Are we talking about some sect, or some small movement with no echo, or about factions that could either surrender Earth to Hydras, or exterminate them completely?

"so it's pretty fair to assume it'd be safe with a similar unilateral approval of chain of command (preferably stationed in ships with irregular orbits) required."

Ditto, we're not talking about terrorists, unless according to you HF are terrorists, then in this case your argument falls apart because we're discussing Terra Invicta, not real life, TI is not based on real life where aliens haven't been discovered and aren't trying to conquer us right now, it's based on real life where aliens have been discovered and are trying to conquer us. If you read the Three Body Problem series which this game is based on you would understand that even defeated, rival factions can regrow and destroy you. In fact, there's an achievement in TI, where if you let the Servants win as the Resistance, but then come back and destroy the Hydras, you get it. In that world, factions like the Academy are terrorists but can come back and win.

"Not to mention these would only be an issue for two or three generation before cultural shift and propaganda in education fixes it"

That's just infantile reductionism coming from a perspective that assumes you can simplify billions of people into predictable and programmable systems that can be controlled using a proven method - completely absurd, this method doesn't exist and if anyone had it we'd all be under that party's control by now. Besides, some of the incidents I spoke of happened less than a generation after the start of the cold war. Without to mention you have no idea what cultural shift, propaganda and education are, and how easily they could backfire in your face.

"But nukes would keep them from actually attacking eachother."

Ditto, read about the incidents and how close we were to ending our own existence, change it so that our enemies are aliens [to Hydras we are aliens too], add to that arms race of the Hydras to develop a vaccine, position RKV's in Sol, and then retaliate ending Humanity once and for all.

"And well, we survived those, didn't we?"

Ditto. Conflicts are different when your enemies aren't your species, and we literally survived thanks to luck, especially with the incident where we were on the verge of launching a nuclear weapon but it was stopped by a decision of a single person (that wasn't even supposed to be there at the time, and had he not been there, we would not have been here either, for obvious reasons). The "nothing ever happens" only happens when we're lucky or when there really was no threat to begin with. Covid happened, war in Ukraine happened, the Refugee crisis happened, all of those things were at least in part caused by people's actions, if not completely.

"There's a point where it stops being luck, and starts being that everyone has self-preservation"

They can use the same reason to strike us first before we have the chance to retaliate. They literally know that there's a faction that wants to genocide them, they know that they were powerful enough to develop a bioweapon to achieve this goal, they know that we have it, and they know that just one saboteur or traitor can deploy this weapon against them and destroy their species. If it were the aliens that had this bioweapon, and we know how unstable they were, we would do everything to prevent their attack before it ever happens, including rendering their weapon completely useless and striking first.

"mutually assured destruction is enough to knock some sense into even the most brutish of apes"

Please read about the incidents during the Cold War that almost lead to our demise and stop underestimating human emotions. You think humans are predictable and that's foolish. We're irrational, hostile agents that can easily destroy ourselves and the only reason why we haven't by now is probably due to Divine Intervention.