Are you lost? This is not the thread on Levin's new book, where, btw, you're also lost off-topic.
As for the video, I don't know the host, but Hicks is a prof in philosophy, and Lindsay is a liberal whose Cynical Theories is not only historically factual but tries to put a favorable spin on Critical Theory.
What they discuss are widely known and accepted lines of Western philosophical thinking behind collectivism, Hegel to Marx, so to speak. It's like a freshman course in western philosophy. It provides a framework for understanding those philosophical developments.
If you have nothing intelligent to contribute, why, well, don't go and prove it.