reject humanity, return to monke
Edit: In all seriousness, it's been a while since I read it. His general ideas are that technology has been a disaster for humankind because, among other reasons, it's freed up time for us to be preoccupied with unimportant bullshit, to the point that it causes mental problems with people. People start to act out in various ways in resistance of our current state because we 'know' somewhere in our bodies that this existence is meaningless. People without the luxury of free time do not have to preoccupy themselves with this struggle for meaning.
He also goes on at length about how leftists are self-hating people and worship victimhood, and their mentality is partly a product of this existential dilemma.
But these are just a couple of points I took away. It's much more well-written than I could personally attempt to summarize in an internet comment.