I know I posted something to MBTI Nebulous (perhaps my 1st post) that was a critisism of Fe. (I think I already appologized for being a bit insensitive on that forum.)
Please, do keep in mind, that there is nothing aimed at you personally. The fact that you have stayed as calm as you have indicates to me that your Fe has a good "crew" working for her and is acting as a good leader.
According to a book I have by Linda V. Berens:
Introverted functions deal with universals (or try to) while..
Extraverted functions deal with "here and now" particulars.
In that sense, I think Extraverted functions are more "fickle".
To see the pattern, look at Se vs. Si, Ne vs. Ni, Te vs. Ti. Then, if you agree with the pattern, ask yourself why would Fe vs. Fi be different?
My own personal reason for distrust/critisism is:
I percive that outside smaller counter-culture circles (like this forum, I suppose) Fe's dictate the conversations and controll the communication channels, and therefore have a great deal of power. That power, like all forms of power, can corrupt (and often does). Consider the reaction you see, a rebellion--against what is often times (not always) a tyrannical domination of communication channels and standards. Even very young girls have demonstrated the ability and propensity to weild the power of social exlusion to keep her "crown".
This is way to abstract and speculative for my usual taste (hours of writing code, can make me that way), but it is as concise as I could state my reason. If you really want to understand where the rebelious attitude comes from, please look for examples that could be contrued as tyrannical from your Fe friends (or if you can stomach it, yourself).
Note: Just because something is percieved in some way, doesn't make the perception true. However, it is still true that perception was real.
I will provide a comparison between what I consider "Good Fe" and "Bad Fe" behaviour. Not also, I think it is actually more common for "Bad Fe" to show up in adults as group reactions by people who have Fe as terciary or inferior functions. But I Fe's who have let their dominant function exclusively run their life are expert tyrants.
Good Fe:
Keeps broad and flexible rules that actually allow everyone(ideally) to feel included without loosing their individuality.
Bad Fe:
Keep rigid rules to keep their "clique" together, and will attack those that threaten either the rules or the clique (from inside or outside the clique).
Good Fe:
Cares for and nurtures their friends, family, and others in their lives as individuals.
Bad Fe:
"Cares for" and "nurtures" with a "one size fits all" strategy and is resentful of people who don't accept their "nurturing".
Good Fe:
Expresses genuine concern for others, while demphasising their "concern".
Bad Fe:
Expresses "genuine" concern for others, while emphasising their "concern".
Sorry, I am having a hard time being clear (I'm still thinking in C++). Hopefully, some of what I said makes sense. Please, ask questions to clarify.