As a 4w3 so/sx, I relate with this.
For me, my nakedness is my way of controlling the hurt, shame, envy and despair. If I control the outbreak of information about my short comings and/or faults then it doesn't hurt if someone talks about it or points it out because I chose to put myself out there and prepared myself mentally and spiritually to deal with it. I don't know if it really is so "brave" in that case. Really, it's a way for me to not get hurt. How can anyone criticize my problems if I've already pointed them out and critiqued it myself? It's only happened a very few times in my life where someone pointed out something that I didn't even realize was a problem in me and it hurt badly. I felt ashamed, stupid, less than and it took a while to get over.
For me, my nakedness is actually my shield.
I can relate to some of this as well, although I don't think I'm that strong with the social instinct, but I do relate to E4.
I also do see a lot of vulnerability in others, even when they are wearing masks, so to me it almost feels fair to not hide my own. I also see no shame in hurt and vulnerability because I know it is a fundamental part of being a human being and it is only cultural nicety that pretends otherwise. When I talk about past pain, to me it isn't an appeal to sympathy or a suggestion of something unusual, but it is like talking about the color of the sky on November 3rd. Pain, vulnerability, fear, these are all the normal starting point. What we can do to be strong or unique is to take all the normal dirt/shirt/fertilizer of life and figure out how to make something grow. Perhaps make a new plant grow from it. For me the pain isn't what is unique, but what you do with it that creates individuality. The pain is what connects people, it is what socially isolates because it is poo-pooed and approached with so much denial and fear, but under the masks it is the one thing that we all deeply understand and what actually connects us as human beings in a difficult world. I prefer to go out on the battlefield without armor because I can. I don't know how to move forward covered in lies.
I do have a bad habit of making completely confessional, naked posts, and then going back and deleting it. It isn't out of shame, but afterwards I start thinking about the social outcomes: What if someone reads this from a power-game perspective? What if someone reading this tries to guess or happens to know the people involved? Then when I realize how many other perceptions are out there, I think it is safer and simpler to delete it and just let it be. I think that is why I ultimately love creative expression. You can tell the truth, the whole truth, and nothing but the truth, but still protect the anonymity of everyone involved, and it may not be comprehended by manipulative game-playing types, so you can go straight to your target audience - the other people who have experienced similar pain, who desire comprehension and growth from it, and who want to share in the expression.
I've come up with a saying that inspires me in the darker times, and it is based on the quote: "a mathematician is a machine that turns coffee into theorems". For me it is "An artist is a machine that turns pain into meaning".
Edit: I also try to avoid arrogant or presumptuous statements because I also feel that it isn't so bad to be flawed or lack insight, but to assume to know it and be wrong seem like the ultimate foolish thing to do. That would make me feel far more ashamed than just having the flaw. It's why I can't interact professionally because it is all based on "faking it until you make it" and that is an intense psychological risk for me. I feel that the downside to seeing too many flaws or being too critical of myself is not so bad. It makes me work hard, it helps me leave no stone unturned, and it leaves only pleasant surprises. I can't let myself march around declaring some idea or creation is wonderful and then discover I was too big a fool to see I was wrong. That's far worse for me than just being incapable in the first place.
