I find myself with another nit to pick*. This actually sounds a whole lot more like unhealthy e5 (or e5 disintegration of e7?) than Fi. If even the slightest bit of 'dependence' means I'm in any way obligated to 'listen' to others tell me I'm something I'm not, then "F#ck you, interdependence!" I see a bit of 'being true to oneself' in it, but (as has been discussed aplenty) I see it as one of the forms of 'be true to oneself' that Fi only thinks it has some kind of monopoly on (and why people mistype as Fi) because of many Fi descriptions. At any rate, I find the above description (your quote) actually describes me quite well- and I don't think anyone contests my FJ status. So just, I don't know, do with that what you will.
I don't especially see anything that resembles my experience of Fi dom/aux in Mal's description. I didn't really see anything that resembled my own experience in his Fe thread either- it seemed like a Frankenstein piece of feedback pieced together from various stereotypes that I never especially related to to begin with. (I'm not trying to be inflammatory or dismissive, but "Frankenstein piece of feedback" is really what it seemed like.) I didn't get wound up about it like some other people seemed to, but I didn't relate to it at all and didn't understand the reason he was posting it. It seems like this thread is having the same effect on Fi dom/aux (some getting wound up, others just not understanding why he's posting it).
The fact that his Fe and Fi threads are getting a bigger reaction than Te and Ti threads- omg, if only there were some way of knowing that's what would have happened.... (And I'm not affirming the 'wisdom' of Ts in pointing out the predictability. I maintain it isn't 'wisdom' so much as it is deafness/blindness to interpersonal noise. But let's let them take as much pride in it as they want, because why not.)
My own experience, if I were to describe my own observations of the commonality I perceive to 'unhealthy Fi', it would sound very different from what he describes in the op. But it also looks different to me from the above quoted thing. I've seen plenty of FPs rationalize their way to ends
way above that plywood shanty, without much
compunction about using people extensive reflection on interdependence.
*There's a way of looking this where it's your fault for encouraging me to pick nits.