It also makes the point that its purpose wasn’t to disrupt cell service, although these things can and will disrupt cell services.
So from my perspective, the article is strange in the sense that the author seems pretty intent on splitting enough hairs to prove the secret service wrong. For me, I don’t care if they are wrong about its purpose— If this helps decrease spam messages, great. If it means that cell services are now more reliable in that area, great. If it’s something that could be hijacked and used for terroristic purposes and has now been neutralized, great.