> when there's no specific evidence that the child is being manipulated.

I disagree with your apparent assumption that "manipulation" by a parent must not only be a negative thing, but that it must also be a conscious effort made by the parent to affect their child's behavior one way or the other. I put the word "manipulation" in quotes because I believe that for many people the word carries a negative connotation, and I'm attempting to point out that in the context of parenting it absolutely does not have to be negative.

I think it's important to note that when children do things that upset a parent, the parent will naturally react in a way that potentially "manipulates" the child into not acting that way anymore.

For instance, if a child acts out at school and gets suspended for a few days, some parents might frown but then say, "That's okay. We know that this incident doesn't reflect who you are." But then let's imagine that the parent is more distant than usual that night, and doesn't interact with their child as much as they normally do (for instance, they might not ask about the child's day during dinner). Even though the parent may not be intentionally doing this (maybe they're just caught up thinking about their child, and what they can do to help), they are in fact sending signals to their child displaying their displeasure.

Similarly, when a child does something that pleases a parent, the child might discover that the parent is more talkative than usual at the dinner table that night, and more interested in what's going on in the child's life. This rewarding behavior could be explained by a parent simply being excited about their offspring succeeding.

In this way you can see that it doesn't take much to "manipulate" a child's behavior. Some people might refer to "attempting to manipulate the behavior of their children to produce a desired outcome" as "parenting". If a child throws a rock and breaks a neighbors window then a parent might scold the child, and this absolutely counts as "manipulating" the child's behavior.

Getting back to the discussion at hand, when a parent rewards their child for a specific behavior in a manner that suggests that the child is courageous and unique, the child might feel pressured to continue engaging in that behavior. If a child is considered by their parent to be courageous and unique when they engage in a specific type of behavior, what might the parent think if the child suddenly stops this behavior (from the child's perspective)? Instead of courageous and unique, will the child now suspect that their parent views them as a cowardly sheep, or a quitter? Is it so far fetched to imagine a scenario in which a child takes a certain stance as a rebellious gesture, but then finds that it backfires when their parents are thrilled about it and shares it with the world? Can you imagine the potential embarrassment of the child? Adults aren't the only humans who can get embarrassed, afterall.

In summary, even such small things as a frown or a smile (or even talking a little less or more than usual) can serve to manipulate a child's behavior, let alone ecstatically sharing every detail of a kid's behavior to the online world. Creating the equivalent of a reality TV show of a child's life will absolutely impose the unspoken expectations and unconscious biases of the parent, and will in effect manipulate the child's behavior and course of action.

Edit explanation: Clarified a point earlier in my response, and fixed/embellished a few sentences.