I don't think sanity is an objective measurement. If I thought someone needed to be put to death for their actions, I'd think you're insane for not killing them. Your (in)actions in this case, would, to me, seem irrational, and to use the contested word, insane.
For this particular case, we might love to see a good Linux install for perfect encrypted communication, but for someone about to die in a blaze of glory in a couple days, this probably isn't their biggest concern. I think most people around here would call them crazy for not at least researching a good technical solution like we would have, but they'd call us crazy for playing with tech in the face of the coming apocalypse.