The specialization in academia has created rigid boundaries, no one crosses. It has made a clear discouragement for people who are experts in unrelated fields (and later formulated itself to a taboo), but this also helps create the lack of awareness that there is a clear stagnation in the system as a whole. You can see in the past when the institutions had far less control on individuals and student/academic culture; some polymaths pushed knowledge due to a lot more heterogeneous thinking.
I don't think there's an agenda behind this, but sort of a natural process when you grow to that extent, and use systems as a navigational tool and prioritize legitimacy. Just like how small businesses become corporations, culture changes rapidly due to the complex infrastructure. So when the culture changes, it becomes more about socializing individuals to respect the process and the institution more than what the process is really is about in its essence. It limits potential groundbreaking ideas/innovation, but the system works so the infrastructure won't change.
It's interesting when they mentioned how American exceptionalism and political correctness are tools used to distract from stagnation. And how that stagnation could lead to something apocalyptic. I think political correctness is an overplayed meme but agree with the American exceptionalism part. It's used to fool the lower-middle-class people to support policies which only the ones above them truly reap.