I agree with you, but I think I wasn't very clear in my previous post, so I'll try to clarify:
The "calm" IEIs
I know aren't the "bottle things up" types, and I somehow seldom have the need to pull things out of them (as I described), but if they start to seem tense, it's often as if they need "permission" to start speaking about themselves, and I'll push to get it out. I really appreciate these calm IEIs, they feel very stable in parts of themselves where I'm not strong. And this is not related to sx-instinct, as my best friend is IEI sx first, and calm and stable as a rock. He deals with emotions in a way that doesn't disturb others. In my previous post, I had focus on how I don't mind the explosive ones, but I never meant I don't like the emotionally calm ones. Of course I do. It's the people that keep things in and THINK THAT IS A GOOD WAY TO BEHAVE, that tend to make me feel tense. I completely selfdestruct in nervousness when people play "silent games" with me. Ime, these are often Fi-types, but I might be biased.
Also, I have no need to discuss whatever people don't share readily, unless it affects me, so people dealing with their emotions, whatever way they do it, through painting or writing or talking with me, are all completely cool. You notice if people boil or not, and those boiling ones are the people I feel wary about. Not the people who deal with their emotions in peace.
Hope that was clearer.