Your article doesn’t seem to have any stats. Can you back up the assertion that they are not spending their enforcing laws? You have a lot of handwaving about the history of police departments and pushback against like bodycams but nothing concrete.
The police in my area spend most of their time enforcing traffic laws, responding to domestic disturbances, etc. Murders are taken very seriously, regardless of who was murdered.
Based on my actual experience living with police in a boring suburbia, your article comes across as completely out of touch with reality due to no actual experience.
Have you considered that the reason there isn’t an explicit law that police have to respond to a given call is because there is immense political and therefore organizational pressure for them to do so? The county sheriff or the mayor would get voted out if that was a pattern in our local government and then police leaders would get fired.