You aren't missing much. Mostly a whine-fest but retold by the most serious dry teacher you have ever had in your life. Me being really charitable here: modern STEM has not solved many of the problem that people thought it would solve, has created new challenges it is mostly unable to solve, and has created orphans of science education. People who had to spend everything they had to get to the position they hold and as a result are warped twisted unable to bond with other people.

This was really my best shot at it. He picks and chooses to make his points, he projects his life on other people, he demands thst modern society solve every problem even problems that the past had but didnt bother caring about. His points are very incoherent and it is difficult to pin him down to an actual argument, the few times you can a basic level of research shows how incorrect he was.

Example: a career in the STEM field can be demonstrated to be a wise choice. Low divorce rates, high employment rates, longer lifespans, and high salaries. Yeah he was fucked over by people that doesn't mean life is shit it means nothing more than what I said. And if you think that people will be all nice and happy living in peace once we get rid of modern civilization well I suggest a conversation with an anthropology major.