The whole stranger danger thing in my view as an adult feels like a downward spiral. It's not like this in many countries. In the UK it's kind of like - kids don't wander about alone because they might run into baddies, and now adults are afraid to interact with kids because they might be seen as a baddy, and this kind of loops around until no-one is interacting. Basically, it's like any adult man is seen as a potent…
This only applies to men though, as if all men are predators by default. There are cases where a single adult man was refused entry into a park, mom calling the cops on a single adult man in a park who was minding his own business etc. As you pointed out, this doesn't seem like an issue in Asia, at least not yet.
No wonder men do not want to become teachers. Why risk your freedom, reputation?
I'd blame the media (especially right wing media) whose entire business model is fear mongering about everything/everyone