> Is that the fault of the parent [...] ?

Yes, it is.

You can complain all you want about land allocation, but when there are 2 tons vehicles going 100+ Kmh/h somewhere and it's closed to pedestrian you don't let your kid got there. Period.

Similarly, if they are reintroducing wolves and grizzlis in a forest near you, and they close it off for trails etc, you don't organize a weekend camping trip there.

Sometimes it's about common sense, stop blaming "society and the government" for your inability to function as a reasonable human being.