I mean, if it's possible to configure and there is at all a reason for someone to configure it as such, then it makes the most sense to treat it as a very valid possibility, right?
Hindsight is 20/20 right? Sure, the duress pin feature was around for years, but so was the technology to set up a thermite boobytrap in a safe. Maybe now CBP officers should be more careful about entering random pins people gave them, but snarky remarks like "Maybe digital forensics shouldn't be handled by barely highschool graduates at a busy border crossing" are entirely unjustified.
It is not snarky, it's the truth. Suspending the constitution within 100 miles of every port of entry? Nah son, the government can conduct their petty investigations with a warrant and proper digital forensics if they want to search your property.