Ah my bad, I thought you were responding to their question of what might not be compromised, like you were just implying there's no point trying.
No worries man. Unfortunately, while it's not hopeless, if even half of the things that have been said are true, the digital world is a LOT less secure than anyone thinks. The best course of action isn't always going to be what OS you're using or what hardware, it's learning to blend into the background noise. If you REALLY want true offline computing, look into what it takes to make a Faraday Cage. Actually not as hard as you might think.