I'm not sure what you mean - I'm not wanting anything but just describing what I see as a possible explanation and discussion point for the interesting observation you made hereSharing one's introverted function content is intimate. It's not going to happen unless there's trust or anonymity.
Wanting Ni dominants to share more of that, and less Te or Fe is about YOUR preferences, not theirs. It's exceptionally easier to adjust the priorities about one's preferences, than someone else's. So if you want something and aren't getting it, there's more options to deal with the situation than simply expecting or demanding others supply what you want.
In my experience, there isn't a firewall between our primary and secondary functions, and our introverted orientation colours the way we come across in our extroverted one - very strongly when the introverted one is the dominant. I find it very plain to see, and when someone is caught in an introverted tertiary loop, or is over-using their tertiary, that comes over strongly too in the same way.