Similar experience / perspective here.
I was walking to and home from school from age 6. I was subjected to flashers on a regular basis. It was normalised. This was the late 1970s. Awful times in many ways.
I was stupidly sensible, and never got involved in trouble, and was shocked when the 14 year old were dating lads of 20+. Didn't lose my virginity till I was 20.
My cousin is much younger than me. I'm 53 and she's 27. Believe it or not, we had mostly the same teachers (those that were in their late 20s, early 30s when they taught me in the late 80s were in their late 50s / early 60s when she went to school in the mid to late 2000's) We have compared notes many times. Teaching styles were similar, but times had changed.
My cousin was smoking and drinking in the park when she was 12. My daughter is 12 now. Yes, she barely leaves the house without me, but at least I know she's not smoking and drinking in the park. (For what it's worth, both me and DD are Autistic)
Neither generation is right. Both generations have had their fair share of tragedies in the way of abductions etc. I honestly don't know what the difference is, but it's not necessarily down to parents. It might be, partly, but I think a lot of it is how you're wired in general.