Nothing like a little out-of-context quotation, eh?
This is a manual written by some civilian think-tanks in NATO countries (Germany, France, Sweden, and Norway) considering how UN forces can disarm an armed populous in post war reconstructions or in the wake of peacekeeping operations, if it is deemed necessary.
It is far, far, FAR from being anything remotely like a US Army tactic, procedure, technique, policy, etc.
There are all manner of studies and plans made out there in the military-verse that consider and analyze all kinds of different possibilities. The existence of, for example, a plan for what to do if a huge meteor lands squarely on the Pentagon doesn't mean that it's actually likely to happen. A study of how to handle a massive outbreak of zombie flu doesn't mean that there is a nefarious plan to actually make it happen and put that plan into action.