You are actually expecting a lot from devices that you never had in the real world in the first place in order to mitigate a risk that is very scary but less likely to kill them than drugs and alcohol, swimming, bad driving, biking, getting hit by a car whilst walking, getting shot, or suicide.
People are freaking out over stranger danger not because it is by the numbers prevalent but because they feel like they can control it then find out the controls suck.
What if I started Bikesafe an always online dash cam / coach for your rider where AI would identify unsafe behaviour and coach your kid and virtually eliminate bike deaths. Would you feel more safe?
What if you read again and again that it didn't work because of how many accidents are caused by drivers or momentary mistakes.
Would you feel only as unsafe as before or worse?