By paraphrasing my comment as you did, you avoided the point I was making. What I proposed is the easiest and most secure way for a normal traveler not already

By paraphrasing my comment as you did, you avoided the point I was making. What I proposed is the easiest and most secure way for a normal traveler not already under suspicion to avoid losing/exposing potential client and employer data to a foreign government during a border confiscation. By no means is it 100% foolproof and I never claimed it was. As I said elsewhere in the thread, if you're already the subject of an investigation your mailed package will be intercepted, but that's an entirely different conversation. In short, the scope of my comment was avoiding a border seizure during travel, not 100% securing your devices from being compromised, which is an impossible goal short of just not using any devices, period.