I think that these quotes are the logical conclusion of prioritizing a rational organization of rebellion into a revolutionary force over other approaches to the anarchy...
ra·tion·al·ize: make (a company, process, or industry) more efficient by reorganizing it in such a way as to dispense with unnecessary personnel or equipment.
Kaczynski expresses this urge quite well with the following statement:
"all other issues must be subordinated to the problem of stopping the technological juggernaut before it is too late"If you can accept the premise that all other issues must be subordinated to X,Y, or Z, then you have allowed for yourself a well-defined goal and a value that transcends among other things, individual people. I reject that premise because it demands a degree of objectivity which does not exist. All values are ultimately bound by the limits of subjective concerns; evaluation itself is a fundamentally subjective activity. The project of presenting evaluations as conclusions supported by objective facts is an ideological project, perhaps the ideological project.There is nothing objective about "stopping the technological juggernaut before it is too late." Too late for what? For who? There is no strictly objective path from the conclusion that "the technological juggernaut" is harmful to living systems to the conclusion that "living systems are important". Moreso, there is no objective path to the conclusion that my individual desires, well-being, projects, and interests are less important than "stopping the technological juggernaut". So why would I ever accept that my individual desires, well-being, projects, and interests ought to be subordinated to that project? And from that conclusion, to the conclusion that it is also more important than others' individual desires, well-being, projects, and interests (the question you are asking)?However, this all says nothing about following from a subjective premise to a conclusion that "utilizing people's weaknesses" is something that should or shouldn't be done. Good luck with that approach to propaganda though! Without all of the ideological bullshit, it becomes much more difficult to convince people that they ought to subordinate themselves and their project to your own.
Elaboration to touch on some of the other aspects of your question:Herd mentality. This is an interesting weakness to focus on, specifically considered as a weakness. I'd begin my personal evaluation of whether or not to wield the strengths of the herd by first trying to figure out what those strengths are: how herds are constructed (especially those I'm considering), what their potential activities include, and what skills on my behalf would be required for manipulating them. The sort of herd mentality that I believe you're referring to is constructed by powers competing with each other that have more-or-less sorted out the underlying mechanics of human motivation and applied what they've discovered to very large samples of the global population using advanced communications technologies, organized bureaucratic violence, etc. etc.The social-psychological weaknesses that are amalgamated to construct mass societies (these herds) otherwise tend towards much smaller groups of social cohesion. The immediate problems we'd face while attempting to use the weapon of herds would be tied up with subverting the already existing mass societies that exist and aiming the capacities we want to pull out of them at our chosen targets. The difficulties we'd face are enormous, not only because it requires immense capacities for communication and conditioning, but also because the technological juggernaut consistently reinforces its own conditioning.This sort of assessment has brought me to the conclusion that it makes a lot more sense to focus on the destruction of herd mentality and what you may be calling "act together with true believers" towards any positive projects. This ties into my anti-ideological perspective described above, but it's also a practical conclusion. I have serious doubts about the capacity for anything like anarchism to have a mass or herd appeal within the brackets of ...basically marketing skills. And I don't see anarchists rushing off to study interrogation techniques or racketeering strategies, or effectively applying them to increase numbers by way of threats.