I've often wondered why with the prevalence of Echo, Google Assistant, and engines that recognize what copywritten song you're using in a YouTube video... They

I've often wondered why with the prevalence of Echo, Google Assistant, and engines that recognize what copywritten song you're using in a YouTube video... They haven't extended the code on our phones to listen for the sound signature of anyone watching a well-known child abuse video. Surely if they use the microphone they can get a lot more positives. Instead of just catching people who watched it on the phone directly they'll pick up all those who watched it on an old TV or highly secure Linux rig like Tails (but that inadvertently left their phone near the speaker). I'm sure the government has tens of thousands of hours of audio and will gladly supply the sound signatures. Think I should submit my idea to Apple??!