It's two sides of the same coin. Many techniques in that book are things that both genuinely kind people and manipulators do, the difference is intent. In that sense the idea of the book is a bit of a Rorschach test, although the way the author goes about it makes it pretty clear it wasn't meant to teach manipulation.
When I read the book over a decade ago, it did not feel like a red pilled book, it felt like a guide for well-intentioned people to learn how to express that more effectively. On the spectrum between "people orientation" and "task orientation", I was a task oriented person learning how to navigate personal and professional relationships more like a well-adjusted person would, and I suspect I and everyone around me was happier for it.