I know a lot of times when I post on here I'm not being emotional, I'm being tongue-in-cheek or exaggerating or even being ridiculous and funny and people think I'm being "emotional" because I'm an NF. It makes me wonder if I changed my user name and type if certain people would begin to read the tone of my posts differently.
I suspect it makes a difference, and the same is true for all the functions. Each post is like clay which can be interpreted different ways. Here are a couple of examples -
1. Posting in a detached and diplomatic manner
If you are an F, then it is because you are polite and do not wish to offend. If you were a T, then you wouldn't be concerned about being rude or stirring the pot.
If you are a T, then this demonstrates that you are detached and rationalistic in your thought processes and simply aren't emotionally invested.
2. Posting in a style that pushes buttons, is generally considered rude, but is blunt and exactly what you think.
If you are an F, then it is time to reign in that Fe.
If you are a T, then it shows you aren't overly concerned about other people's feelings. You are tough and objective.
There is also an overlay of content that can support one or the other interpretations of course, but far more often there is grey area. You really could look at it either way. Often it would be say 60% reasonable to interpret it one way and 40% reasonable to interpret it the other (just using percentages to show slightly more or less likely)
There is also a funny phenomenon in which F's will tend to tell T's what they are feeling, but the reverse is also true. Far more often I've seen or had T's tell F's what their true motivations or feelings are. It's happens far more between the two functions that within. I haven't as often seen a T say it to a T, or an F to an F. I'm not sure what that is all about.
Yeah there are totally Ts who get sensitive and pissed about certain things, of course. That's being emotional. It's interesting to me how emo is always equated with crying or hugging kittens and puppies, but not with anger, bitterness, touchiness, etc....
I think not counting anger, arrogance, and dominant emotions as being as subjective speaks to the larger culture. Men have traditionally been allowed to get angry or enthusiastic at sports and such and it isn't considered emotion in the same vein as sorrow or tenderness, which is more permitted in women. This is seen again in the T and F. Getting angry or becoming arrogant does not seem to be seen as subjective as it is. I would venture to suggest that anger, and even moreso arrogance, are the most subjective of the emotions because these require ego/self investment more than the other emotions. It also might be the one to most easily distort reason and yet it does not seem to call into question a person's objectivity to the same extent that a nurturing instinct or melancholy does.