Anything sounds bad if you take sentences out of context. Read the rest of chapter and pages leading up to this part.
He talks about how he struggled getting back into dating after his wife died and initially he tried dating very chivalrously, being kind and buying drinks for ladies. He found that most women would take his free drinks and ditch him.
The lines you quoted from his book are about his mental shift, and after he started doing that it actually worked! He was successful with that tactic, women wanted to sleep with him after he started thinking and acting like that.
He didn't break any laws, force anyone to do anything against their will, or hurt anyone. If that's the case, and the women actually responded to it, then what's wrong with it?
That's why I think everyone is being puritanical about it. Yes our cultural sensibilities don't like it, but nobody was hurt and he's being honest about something that actually worked, why is that bad?
