Of course if you are a horrible person you might dislike them for their good behaviours. But if you're a horrible person chances are you'll mess up your kids with or without that rule.
There is a difference between not being able to control your child fully, and not even trying. In my experience, most parents are trying, but I have met one or two who did not care, seemingly believing that whatever their kid does is perfectly okay, because hey, it's just a small child... completely ignoring that fact that other kids around, of the same age, are well behaved.
Now, this strategy of making excuses may work well while the child is small. Like, adults will look at a misbehaving 4 years old and only think "what a horrible child... and what a horrible parent" and walk away. But as your child grows up, the environment becomes less forgiving, and it becomes more difficult for you to instill good habits. If the child's behavior irritates you, as a parent, you can bet that it irritates unrelated people at least twice as much. This creates a spiral, when the environment and your child become hostile to each other.
On the other hand, if you succeed to instill pleasant behavior in your child, it can create a positive spiral, when other people enjoy the presence of your child and by their attention reward the nice behavior, and your child has more pleasant life and more opportunities to further improve social skills.
It’s about setting a boundary where it is most productive, children who are not socialised by the age of four hit problems in later life. Parents and kids who go to war help no one.
I was fortunate enough to grow up with good parents, but there were times where they were misguided and myself disobeying them helped us both in the long run.
Those times you disobeyed were also met with decades of limiting your agency. Not letting you cover yourself in peanut butter or fight with other kids, or mistreat pets, or spend infinite money.
Jp sees resentment and pride as the ultimate source for being a rapscallion or monster, putting responsibility on the parent to keep their child in the ‘liked’ category is a very elegant way to keep a kid from destroying your house but also make a parent confront/channel any resentment or excessive pride into productive directions.