IOW, a strong NTP influence should be expected, and a sizeable population of the non-INTPs who migrated here (and were encouraged to do so) were INFJs + NFPs.
That was the original membership of this site, so it determined forum culture from Day #1.
Personally, I see this site as less Ne-intensive and more Te-rejecting. I see a large chunk of Fi types who wander here and make their opinions known -- the [sizeable] minority of Fe people often get a backlash from the rugged individualism of Fi, even if the Fe users are mods.
I think N is more inclusive rather than exclusive; the one thing it excludes is rigid mindset, it insists that possibilities and options exist and won't let people claim there is just one. But doesn't that suggest then that every view should be explored? N just doesn't commit to anything.
Go on INTPc, for example, and you'll see a lot of Ti+Si behavior (both introverted functions of INTPs) and little Ne or Se, and a strong reaction against Fe.
This is why online forums are SO popular with introverts; they are freed from using their extroverted secondary and can finally find voice for their internal primary perspective.
If we were at a dinner party, face to face, I'd agree with you, though: THe primary would be protected, the secondary would lead the engagement unless the introvert knew people well.