I can't remember where I read it, but I remember a similar article mentioning a very interesting side effect of having decently high-fidelity microphones in the

I can't remember where I read it, but I remember a similar article mentioning a very interesting side effect of having decently high-fidelity microphones in these devices. They would pick up noise outside of the range of human hearing and interpret portions of it as a command. It was akin to those articles about the sort of strange phenomenon in machine learning in which computers interpret input wildly differently than humans would due to the underlying modeling the systems are subject to. My guess is this is in that class of defect.