Is all advertising manipulative?
This depends on whether you mean "manipulative" in a pejorative sense or not. Essentially all advertising is meant to manipulate people in the sense that it is meant to try to get them to do what the advertiser wants. It is meant to get them to buy a particular product.
That does not mean that all advertising is manipulative in a bad way. If Disneyland, for example, advertises in such a way as to make you believe that it would be fun to go there, is that manipulative? Of course it is trying to get you to do something, but it is not lying to you and it is not trying to get you to do something that is bad for you.
So, all advertising seeks to influence us. But not all advertising is manipulative in the sense of trying to get us to go against our own best interests.