I personally believe there is no way for them to succeed. If they were acting in good faith the actual incease in the number of intelligent people, who would recognize cruelty when they see it, would tear it down. If they acted in bad faith, which they most definitely would, they would fill the world with these idiots.
A single person can be immoral but that doesnt mean morality doesnt exsist. They acknowledge they are being immoral by not applying reason and are stupid to do so. Yes the individual can benefit from being immoral but we are talking about society, when referring to eugenics, which does not benefit from immoral behavior.
You seem really set on insisting that there’s a link between intelligence and morality, and at this point I don’t think I have the energy to disabuse you of that notion. Suffice it to say, you’re wrong on both the individual and societal levels. Much of the history of civilization is war, and involved in that comes conquest and reorganization of societal boundaries. Pretty much every society today is the product of a chain of wars. Are you going to say all societies are bad, just because there’s blood in their foundations?
The world isn’t as black-and-white as you’re painting it. Intelligence isn’t linked to morality and morality itself is more gray than black-and-white. That latter part is something you should definitely have learned in your ethics class.
I dont know what to tell you. Youre not someone I would goto for insight into intelligence or morality.