Ok, I have Ni in my ego block and while I can't speak for everyone, I can say that I spend a huge amount of time inside my head running future scenarios on present situations.
Sort of like IBM's Deep Blue beating the human chess champions by methodically running every available chess move into it's multiply branching future, 1000 moves in advance.
And every tiny fact matters in projecting the future. "She wore a violet blouse and white shorts on our date. That means she is interested in sex but doesn't have a lot of experience and wants to stay pure for now."
, your Ni-egos have taken in all the facts that you presented them with, and they have walked a path into the future (now present) with you based on what you presented to them because they see that as an acceptable path, and then you change things and they withdraw.
You may have shown them something that leads to a future that is unacceptable to them.
Which is an elaborate way of saying that they don't want to go there. I don't think they are bullshitting at all. Not at all.