This is basically fearmongering, and saying "if you're not a pedo, you have nothing to fear", installing the tech on all phones, and then using that tech to find the next wikileaks leaker (who was the first person with this photo), trump supporters (just add the trump-beats-cnn-gif to the hashes), anti-china protesters (winnie the pooh photos), etc.
This is basically like forcing everyone to "voluntarily" record inside of their houses, AI on that camera would then recognise drugs, and only those recordings will be sent to the police.