I see parallels between the Unabomber manifesto and his 'bullshit jobs' thesis. Although over a decade a part, they both sorta came to the same conclusion about how humans are being alienated. Both works are fundamentally critiques of modernity.
Also, the fact that he literally had to threaten people to force the publication of his "manifesto" says it all to me. [0]
[0] https://www.washingtonpost.com/history/2023/06/11/ted-kaczyn...