Security being broken in theory is all well and good, but theory and practice, while theoretically the same, are practically, extremely dissimilar.

At this point most "bad security" articles regarding airports have been of the "TSA fails to..." variety, not "Perimeter security doesn't actually exist" variety. Point being: most people seem to assume that perimeter security is sufficient.

Further, by analogy: It is like saying "guys, we have this input checking thing covered, read 'smashing the stack', while discussing XSS.