I'm just coming in at the end, here. Is the dispute at this point mainly about Ne vs Ni?
When I worked at a translater at one of the big international organizations I often had to translate sensitive documents, such as major diplomatic speeches, etc. With the really touchy translations, the usual routine was to have one translator do the initial translation and then have a second translator edit that initial translation.
The best combination was to have an Ne-user and an Ni-user work together. Ne-users were great at brainstorming lots of possible ways to handle a really sticky passage; Ni-users were great at taking a number of possible translations of a sticky passage and deciding which was the best one of the batch or at honing a given translation down to its most perfect expression. Ne is about innovation; Ni is about optimization.
Being an Ne-user, I really appreciated the skills of Ni-users. I worked closely with an INFJ for many years, and occasionally with an ENFJ. We would take a particularly difficult Russian passage (lots of nuances, slang, sarcasm, double meanings, folk sayings, etc.) and spend hours batting back and forth that one passage trying to find the best way to express it in English. If the translation just wasn't clicking, I could come up with a whole new approach to the passage; and the Ni-user could spot any little inaccuracy or undue slack and hone the passage to perfection.
I would get the Ni-user to enunciate precisely why they preferred one possible translation over another, and over the years I got pretty good at anticipating their needs and even doing a fair Ni analysis of a passage myself. In time I could sit down with another Ne-user and act as an Ni-user myself, i.e., by analyzing and spelling out exactly why one passage was demonstrably better than another. In the latter years I worked closely with an ENTP translator as my secondary on difficult translations, and I could feel a kind of Ni-user irritation with the ENTP as he came up with all kinds of good possible translations but seemed to be blind to nuances and qualitative differences in the various alternatives.
Anyway, I'm not sure what my point is. To me, Ne vs Ni is all just point of view. Sometimes I get a little irritated with Ni-Doms and their seeming inability to take in new approaches once they get stuck on a certain track. On the other hand, I certainly admire their sharpness on a given issue when it comes time to hone an idea down to its most perfect expression.
When Ni-Doms are complaining about a personal problem, personally I would prefer that they be a little more open to new ideas. Usually it seems like they're too invested in their current approach and they're just looking for ways to tweak their current approach, whereas I feel they need to strike out in a whole new direction if they really want a fix for their problem.
But I know from my work experiences that it's possible to bridge the gap with a little patience. The two types can learn to work together over time. In the meantime, when Perceivers (ENTPs, ENFPs, or whatever) want to influence Judgers (INFJs, INTJs), the usual advice is for the Perceiver to plant the idea and then back off and give the Judger time to consider the possibilities at their own pace.
[...]you know, is there actually some sort of implicit or explicit group cultural agreement on this site that anyone engaging here by definition (meaning, simply by virtue of their/our participation) wants others to play that kind of psychological teacher role? Like, simply by the act of participating here, am I actually saying in the site's cultural vernacular, "Please, assume I explicitly want others to tell me what they assess I don't know and/or should in their view look at about myself under the guise of 'for your own good though right now you don't consciously realize it'" teaching? Not rhetorical questions.
Fe-users like to vocalize their problems, complaints, pet peeves, etc. It's in the nature of Fe, an extroverted function: Fe-users look for appreciative listeners in order to bounce a few ideas off them. Ne-users respond by brainstorming fixes for the problem. But Ni-users don't like Ne fixes, and Fe causes them to vocalize their displeasure. Which causes the Ne-user to complain in turn that the Fe-user wants to complain and whine but won't accept helpful advice when offered. And so on.