If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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I don't think that's true. Openly and directly speaking about one's desires for example isn't an easy skill. Many guys are tense because they are afraid to fail or to be rejected and put up a lot of barriers towards genuine intimacy.
It's also worth noting that you speak about "appearing vulnerable" while I speak about vulnerability.
If a woman touches you, do you tense up or do you relax? If you tense up because you are afraid of intimacy, it's going to make connection harder. It's even worse if you engage in physical contact because you read on the internet that you should and then tense up because you are afraid of physical contact.
There are many sources for improving social image and attitude. It's happens frequently that people who start with PUA start to behave in a way that burns existing social connections.
I didn't say "extra squeaky clean" I just said clean. Don't strawman.
A lot of woman openly state that they judge man by their shoes. Wearing leather shoes instead of sneakers isn't a high hanging fruit.
Much of that basic advice is given in a way to maximize bootcamp attendence.
But the former is what people whose flat is already clean are likely to hear when you say the latter -- which is why one should reverse all the advice that one hears.