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;
In short the original post was subtly but very opposed to those very laws you are looking at.
Mind you there is nothing about OS level age verification that stops any of the above - which is why I'm against it.
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.