It's more like: "Why not?"

From their POV. I mean if the "sloppy" approach works (in this specific case) roughly as good as whatever military specific alternate approach they have(1), then it makes sense to use that, to not disclose the capabilities of alternate approaches to their enemy (the US).

(1): That is assuming they have one, if not ... I would be both quite surprised and somehow not really surprised like both at once.