Hehe, I'm INFJ type 4 and I do see myself a bit in what you say. I have to really know and trust someone to be like that though.errrr .. in my experience ..
I would say that IxxJ and ExxJ are definitely emotionally aggressive :laughing: like a switch. Push the wrong button, step the wrong toe, place the too pungent (unintended) criticism .... *BAM*, you've done it. You got to run, fast.
I don't know .... my NFP openmindedness makes me less reactive, so it takes a while for me to decide whether or not i am offended, angry, whatever. I have many moments where I can decide how I will respond. Strong Ne-users want to experiment, push boundaries, poke and trigger. This is not possible with ''explosive'' types.
INFJ type 1s and 9s are calm as can be, INFJ 4s are rather explosive (INFP type 4 as well, for some reason)
I also have 9 in my tritype too which shows as even in these situations, I am incredibly conflict avoidant and don't go anywhere near arguments. I just yeah, will openly say if something has pissed me off the closer I get to someone.