A friend asked me to give him my opinion on Mark Manson's concept of "vulnerability" (and his book "Models"). Although I didn't read his book, I searched for more information about Manson, so I can give him (and you) my opinion.
Please note that this is my opinion. I am not saying that Mark Manson's theories are wrong (they aren't).
So, I found this article titled "Vulnerability and Avoiding Manipulative Relationships", so here I share my opinion based on this article mostly.
Manson's book "Models" has gained a lot of attention in the seduction community. As far as I can understand, he's saying that vulnerability is to say the truth in any situation, without thinking about saying things only to impress a girl, especially if you don't do these things, because a woman can understand easily if you are a fake.
But let me ask you this, what's the difference between his theory and let's say, for example, David X's "honesty" theory, or any other "natural" or "direct" game? All these theories are based on telling the truth, without caring what's she may think about you. How this book gained so huge attention, the moment that so many instructors are saying the same, I don't know.
The truth is that by saying freely what's in your mind is the best thing you can do, but not always. I believe that sometimes it's better to keep some secrets and not saying anything about you. And if you are a shy guy, or if you don't have many girls in your life or even if you are a virgin, any girl can understand it (maybe they say nothing about, but they can understand it).
For example, would you tell a woman that you are reading books in order to win girls? Or that you are a virgin? Or that you are approaching 20 women a day, in order to have sex? If not, then you agree that sometimes you can't tell anything to women.
I read his article (link above) and although what the notes are some known and good stuff, the reaction of the guy in the 3rd scenario, is bad, in my opinion.
In the 3rd scenario, where this girl calls him irresponsible, this guy gets up and leaving. Manson may have a good system, but if we have to become so sensitive and we are not accepting anything we don't like to hear, especially from a woman we just met, who she doesn't know us and we don't know her, soon we will not be able to accept nothing but an opinion on us.
This is not a "I'm standing on my feet and I like myself" approach, but "I'm a coward to refute you or to hear your opinion about me" (if I understood well the message he tries to pass).
Why, if a girl calls you irresponsible for something, does this to manipulate you, while the other girl who asked for some questions (in the fourth example) is honest?
So, if you approach a girl and tell her something like "You are beautiful and if you like me too, we must be a couple or make sex" or even "We know each other for some time now, so I want to go out sometime with you for a drink". This is not honesty? Even "betas," tell the truth to girls, for example, "I like you", or "you are beautiful". What's the difference?
I believe in telling the truth, but sometimes the truth is not something that gets the girl. For example, you can approach a girl and tell her the truth, that you want to fuck her (besides this is your purpose, isn't it?).
But you are not approaching like this, are you? I believe that Manson's approach makes men cowards, so when they don't like what they are hearing, their only option is to leave instead to stand for themselves.