Nothing to do with street design - most suburbs have a park a safe walk near any house. That kids are not walking there is nothing to do with street design.
Some state legislatures are pushing back against this. Utah passed a law in 2018 which amends the definition of neglect to exclude this kind of thing.
https://le.utah.gov/~2018/bills/static/SB0065.html
(c) "Neglect" does not include:
[...]
(iv) permitting a child, whose basic needs are met and who is of sufficient age and maturity to avoid harm or unreasonable risk of harm, to engage in independent activities, including:
[...]
(B) traveling to and from nearby commercial or recreational facilities;
there's a general issue with rise in protectionism
However, the ending though, really feels like they're one step away from anti-vax, anti-education, and pro-hate pro-bigotry.
This case really feels like an over-reach. But to condemn the entire system because they have an interest in making sure the country functions and sets minimum standards of life and care is not a "bad thing". The government represents the collective decision-making of millions, hundreds-of-millions of people.
Don't throw the baby out with the bath water because one cop (in rural Georgia of all places) over-reacted.