Influence is manipulative depending on how it is being used.

If the manipulator attempts to get someone to adopt what the manipulator himself regards as wrong, it resembles lying. The liar tries to get you to choose a false belief or to make a mistake in what he thinks, feels, doubts or pays attention to.

Manipulation often harms. Manipulative phishing and other scams make identity theft possible; manipulative social tactics can support unhealthy relationships.

Manipulation is wrong because it involves immoral techniques. It means treating the other as mere objects and not as a rational being.