Earlier quoted context omitted.
Until a court rules that they can ask for your encrypted remote backup because reasons. And then hold you in contempt until you comply. This isn’t a technical problem, it’s a political one, which means it demands a political solution.
You can leave your phone at home and buy another one in the new location. That's why they have phone shops in the airports.
Didn't half speed up border crossings when your itinerary is a week and all you have are your clothes, your passport, some travel money and your tickets.