I did, and from what I heard, it is a big myth that the results were actually as useful as the first assessment on discovery of them had been. Later studies have, as far as I know, been much more sobering as to the "usefulness" of the data acquired there.
The website you link also immediately shows the problem (even in presentation, presenting them quite sensationalist, immediately highlighting, that there is no possibility of neutrality in assessing the results): The "cruelty for cruelty's sake" in the conditions of the experiments cannot easily be removed from the results. Making the data in the end only useful for very specific circumstances, and hard to untangle. Lets take venereal diseases for example - it ultimately shows how they spread and interact in conditions of forced mass rape under conditions of extreme squalor, as documented by people not engaged in proper double-blind environments. The usefulness of that is not as high as the myth surrounding Unit 731 or Mengele's experiments might suggest - and as your linked website also shows, there is a material interest in selling that myth of "forbidden, evil experiments resulting in knowledge".
Maybe I am, part of being in a bubble is, that it is hard to properly know that you are. Although I think I prefer the term "to live in ideology" - because it is perfectly possible to consume lots and lots of different, real-life sources, and still delude oneself into believing things, by only viewing them through a distorted lens. But I do see what you mean, and my answer has been: That was also the case when socialist movements first formed, needing to go through a phase of disillusionment with the former French Revolutionary period, as well as Utopian Socialism first developing as a multipronged movement/collection of ideas, until the realities of class struggle shaped it in a specific way. For example: Yet immature phenomena like the Luddites or the Silesian Weaver's Uprising were indeed necessary steps, for further developments later on.
I also cannot say as much about the state of things in the US, outside of internet chatter and mainstream news, that much is true.
I had a talk about this with a friend a few years back, who essentially made the same argument as you did, because all he saw was things getting worse. I think that observation isn't wrong, and will probably remain true for years, probably one or two decades at least. All with political confusion, further vanishing of the middle class and increased barbarism within politics. But it's precisely because things will get so unbearably bad, globally, that I think a material movement opposing it will appear again - successful or not - because that has always happened in history.
Concerning the younger generations: The apathy is precisely a thing, that is also upheld by ideological structures making organisation impossible, by basically making the very thought of being hopeful in any way seem foolish. I don't know if it ultimately will be foolish - but I do know, this sort of pessimistic current has been one of the main ways the status quo defends itself. (See for example Ẑiẑek's famous interpretation of the "coffee without milk/coffee without cream" joke - about how what is presented as not within the status quo is essential to how the status quo presents itself; Similarily with his exploration of how ideology nowadays tends to work by not believing yourself, but deferring to people believing for you - "I myself don't have superstitions, but the others do, so I shouldn't try to exert influence over society that, it would be futile/disrespectful.") Thus, I, of course, don't know how it will pan out either, but I do remain convinced - it's basically impossible to have the total collapse of many essential structures as we, in my opinion, will have/are having, without a dialectically growing answer in the form of a new material movement.
And besides that, younger generations also need some time to escape utopian, childish interpretations, one way or the other - not just in the way movements develop historically, as I mentioned in the first paragraph - but also, how people develop and mature with age.