This is totally false. In modern techno-industrial society you have abundant freedom to do meaningless things--you have a ton of choices in how you fritter away your time in hedonistic pursuits--but in all practical, life-and-death choices, man is completely powerless and freedom-less at the hands of powerful organizations. But it is the freedom to exercise practical, life-and-death choices that is real freedom, which people need to experience to live happy and dignified lives. Purely for the sake of technical necessity, industrial society must have these practical freedoms wrested away from individuals and placed in the hands of powerful organizations. This has been a gradual process, beginning with civilization, but it has become especially acute and accelerated after the industrial revolution. Kaczynski's knowledge of history is deep and extensive on this point.

I recommend you read his first book, "Technological Slavery" on this topic. You can check out his second book "Anti-Tech Revolution" as well, though this deals more with ecological issues in my opinion and less with human freedom.