I agree with the drama element. My LSI-Se always feels an immediate release after he's blown some steam. He doesn't hold back and hates it when I do. One time I was taking a while to come back to him during a disagreement and he pushed me to respond and I said, "I'm trying to find a nice way to say I think you're being a dickhead" and he responded with, "why not just call me a dickhead?" So I did and it cleared everything up way quicker.
It's made me think that all my life I've been taught to do the opposite of my programming (i.e. to stay rational, practice non-violent, non-emotional communication) whereas LSI doesn't respond to that. With him, I'm unlearning all the cultural stuff and just getting back to the raw emotional side. And if I'm not blunt and over the top in my emotions he sometimes doesn't understand that something is wrong.
It's very freeing to be able to tell someone you love to fuck off and have them appreciate your honesty. And then yeah, like you say, move into a more rational conversation after the release. Maybe being able to do this will also train me away from manipulation too - which is possibly just a byproduct of dealing with other types my whole life and not being able to yell at them but also not being able to choose something other than an emotional response