Because the occasional practical benefits do not outweigh some of the more irresponsible parents leaving children or pets in cars on hot/cold days. I view that as being more of a public safety issue much like seat belts.
As for your second point, it's because for a lot of the poorer parents they don't really have the ability to let their kids roam freely. Either due to proximity, lack of funds and so forth. Not to mention the institutional problems minority kids face on a daily basis (see: black children being shot by police).
It's not about requiring helicopter parenting but rather that laws like this don't really solve the actual problem for the majority of parents in the US. It's effectively lip service and I guarantee the wriggle-room left in the law will be used to harm minorities more than anyone else.
As for your second point, it's because for a lot of the poorer parents they don't really have the ability to let their kids roam freely. Either due to proximity, lack of funds and so forth. Not to mention the institutional problems minority kids face on a daily basis (see: black children being shot by police).
It's not about requiring helicopter parenting but rather that laws like this don't really solve the actual problem for the majority of parents in the US. It's effectively lip service and I guarantee the wriggle-room left in the law will be used to harm minorities more than anyone else.