Thank you for linking this, I had a great experience reading it and discovering the same problem that the author had. I didn't even consider it was possible to directly and intentionally have an emotionally vulnerable conversation! I love when I have them, but I always thought of them as 'happy accidents' that just occur sometimes.
It's never even popped into my head that these are avenues in a conversation that you can take with intention.
In my experience the best way to have a vulnerable conversation is just to put yourself out there. And have a back up. Once in a while, I'll say something and clearly it's not desired, so it's always nice to fall back to 'Hey did you want some more cookies / can I get you another beer?'.
It's never even popped into my head that these are avenues in a conversation that you can take with intention.