I don't own a personal cell phone. I don't own a personal laptop (yeah, I have this weird computer box that sits under my desk, go figure). If I were traveling for personal reasons, as a tourist, I would have no digital devices with me (beyond a cheap digital camera). What we are saying here is that I would possibly be subjected to extra scrutiny and possibly be denied entry to the US because I live simply.
My wife's flip phone with no data plan? Unusual, requires scrutiny, I guess.
Guess I'm not traveling to the US any time soon.
https://www.google.com/amp/s/amp.theguardian.com/travel/2017...
In addition, there IS a law on the books that says that you must give reasonable assistance to CBP in conducting a search, or be subject to a fine and jail time. CBP construes this to mean that you must give them the encryption passwords to your devices. EFF and others disagree, but the matter has never been decided in court, in part because CBP drops the cases if they are challenged.