Truthfully (IIRC) the book is more about "Influencing People" than "Making Friends." But, it's about doing it in a genuine way.

I think it's puzzling that so many people here attach such a negative connotation to "influencing." I mean, my partner made me really hungry tonight when they cooked dinner and it smelled great. It influenced me. MLK influenced people. Etc. etc.

The book "Getting to Yes" covers similar terrain, from a different angle, but still targeting Win-Win, without sounding as manipulative as "influence people".

BTW, Dale Carnagey changed his name to crease a false association with Andrew Carnegie.

So there is good reason to distrust Dale and his followers.