That's unfortunate because he expanded on ISAIF at length in his prison writing and took a more thoughtful and look at a lot of existing political tropes. For example, in his Anti-Tech Revolution* he lauds the tactics of early feminists' campaigns to obtain voting rights for women, and similarly deconstructs a lot of flaws in right wing ideology.
I disagree with a lot of Kaczynski's ideas and methods, but I still regard him as an important thinker and wish people would read his output in full rather than rushing to have the hottest take (not meant as a dig at you, rather the avalanche of attempted zingers on Twitter and in the media over the weekend).