Also not covered is what makes "a spoiled brat". In my experience, both as a child and adult, it seems the "spoiled brats" are the children that have little to no boundaries and are allowed to do whatever they want even if there parents are present, and display helpful properties.
I considered my self a pretty forgiving parent, but in my opinion a parent who is not in control of their children at least to a degree where they can be pleasant to strangers in public(what if they dump milk on a stranger in public and laugh?), is not a good parent and their children struggle from a lack of structure.