That trope is pretty dangerous in itself (there WILL be time they have to rely on the unrelated adult), and I'm pretty adamant on teaching my kids that the vast majority of adults can be trusted, instead trying to instill Tricky People in them: https://fitzroyelc.com.au/the-tricky-people-lesson-you-need-...

Thanks for that, it is a much better idea/link than the common stranger danger. It also matches better to what other groups (schools, scouts) that I know of are teaching kids.