PUA teaches you to treat women like games. Some will say it's all about giving you confidence, but it isn't. It's entire purpose is to use a handful of gambits to fool women for sex. I've read several of those books as I was briefly interested in that world in undergrad.
Keeping fit, having hobbies, being knowledgeable and aware, being part of an outgoing social circle, will give you the traits and skills you need to establish genuine relationships.
Wanting a physical relationship is fine, but wearing a pink fuzzy hat, telling a girl she's ugly, playing cat and mouse and bullshitting about your Chevy Camaro is dishonest.
I didn't suggest the book for PUA. When I was 16, I was a socially degenerate nerd who had no friends and zero romantic prospects. The interactions and steps that people go through when forming relationships was absolutely alien to me.
I suggested the mystery method because it answers each of those questions in extreme detail. It explains what women find attractive in men, it explains the stages of a relationship, and it explains all things you shouldn't do or say when you're courting a woman.
The "no friends" part of my social problem was fixed by getting banned from world of warcraft, which is why I didn't suggest other reading for how to make friends.
Many 16 year olds are not interested in meaningful, genuine relationships. Perhaps most teenagers who get casual sex are bullshitting their way to it. Some are just naturally confident, attractive and interesting, but I'd wager a bet that the average kid who actually gets laid is bullshitting quite a lot, with or without ridiculous hats.
Keeping fit, having hobbies, being knowledgeable and aware, being part of an outgoing social circle, will give you the traits and skills you need to establish genuine relationships.
Wanting a physical relationship is fine, but wearing a pink fuzzy hat, telling a girl she's ugly, playing cat and mouse and bullshitting about your Chevy Camaro is dishonest.