Sure but it becomes an arms race. There is also a lot of people that have shown that you can make images of dogs and cats that hash to Apple's hash detector. At

Sure but it becomes an arms race. There is also a lot of people that have shown that you can make images of dogs and cats that hash to Apple's hash detector. At some point a white hat is going to start making memes that cause hash collisions. When 300M all violate some hash trigger, it will cause a stir and restart the game.