The reason I asked that question is because I don't think it's complicated. I should be able to lock down my device such that no other human being on the planet can see or access anything on it. It's mine. I own it. I can do with it whatever I please, and any government that says otherwise is diametrically opposed to my rights as a human being.
You are more likely to be struck by lightning while holding two winning lottery tickets from different lotteries than you are to be killed by an act of terrorism today. This is pearl-clutching, authoritarian nonsense. To echo the sibling comment, society does not get to destroy my civil rights because some inbred religious fanatics in a cave somewhere want to blow up a train.
Edit: And asking for someone to says "there are concerns!" to proffer even a single one is not a Socratic line of questioning, it's basic inquiry.