>When you use this manipulation to get your way to your kids, the kid watches you, and you find yourself the lab rat of a psychological manipulator far more capable then yourself. And the kid uses tricks you never heard of to shape your behaviour. Which causes a feedback loop of who can trick the other into doing what they want better.
It's not a manipulation or a trick.
It's a "reward system". You get X only if you do Y. Period.
It has worked wonders for ages. Still does in most parts of the world. The US has a messed up system that ends with annoying, over-self-indulged, entitled children and adults.