Even if they are doing all of those things, it does not mean that their actual activities are anything other than I stated (which, by the way included activities beyond pickling eggs, you cherry-picker).
You seem to be claiming that if someone is a prepper, then they are also planning to blow up buildings, poison populations, etc. Seems a bit of a stretch.
If some militia members are also computer programmers, can I go off and make a bunch of assumptions about computer programmers based solely on this?