He was right about one thing, though. No one would give his writings a second look if he wasn’t a terrorist. Even if the many copycat manifestos would be much worse.
Your intuition is correct. Here's TK's own words on the matter [0]:
> But even leaving aside all questions of “political” utility and considering only my personal predilections, I have little interest in philosophical questions such as the desirability or undesirability of the “herd mentality.” The mountains of Western Montana offered me nearly everything I needed or wanted. If those mountains could have remained just as they were when I first moved to Montana in 1971, I would have been satisfied. The rest of the world could have had a herd mentality, or an individualistic mentality or whatever, and it would have been all the same to me. But, of course, under modern conditions there was no way the mountains could have remained isolated from the rest of the world. Civilization moved in and squeezed me, so…
[0]: https://www.thetedkarchive.com/library/ted-kaczynski-s-lette...
You may enjoy reading this:
https://theanarchistlibrary.org/library/ted-kaczynski-the-tr...