> travel to oppressive counties

Thats pretty much all of them now.

If we just look at traveling, not really, only the English speaking ones and partially Russia, for now. No one will ask you for your passwords when going to China or the North Korea.

Great way to raise suspicion. Maybe buy an old android and fill it with random garbage that looks plausible.

Just load it up with an emergency contact, your airline and flight details, the address and number of your (or any plausible) hotel, and that's it. If questioned, you can explain that you don't want to suffer the theft of private information, so you just travel without any. Do try avoid implying that they're the thieves you're most concerned about if you value your time.

You need to travel without your laptop too, which is (for me, at least) much more trouble to replace at the destination. I tend to just carry a Chromebook or a fresh OS install with nothing private kept locally. It's a bit more awkward to get stuff done while I'm away (especially on the plane), but I can mostly use remote resources if I have to.

Major airports process 100,000 passengers per day. One-in-a-thousand occurrences happen hundreds of times per week.

I don't imagine a person travelling without a phone would raise any eyebrows.