Earlier quoted context omitted.
I grew up in europe, and I had two instances where I came close to being abducted as a kid. You are naive if you think parents are overreacting. once you become the statistic the statistic is meaningless to you
I don't see how a wristwatch tracker would have helped, though. Nowadays I'm sure potential kidnappers are well aware that kids often have some kind of tracking device on them (smartwatch, smartphone, AirTag, etc.), and will quickly get rid of any such devices before taking an abducted child with them.
Predators don't just snatch you up like in some movie, they watch their targets first, or lure them away.
People/children have a gut feeling when something is not right and can call for help.
Will it be 100% effective, no, but it will drastically improve response times just by knowing the exact/last location.