Fi PoLR can make a person (XLE person) tractable to an atmosphere's or person's Fi sentiments, if it isn't deemed as a threat. It is common for Fi PoLR to want to go with the flow and determine how to act or express themselves with a group based on how well their expressions and expressed thoughts are received.

It does not however mean that they will go along with you on something they don't want to do, but rather will use the reactions as a compass for how to continue social engagement or back out from it while still being perceived in a positive light.

Ego Fi on the other hand will often only be able to voice itself in disagreement. What I mean is that when you get a person with ego Fi, they think most greatly (compared to other types without ego Fi) about how their and others various actions affect their close relationships, as well as the relationships they have with other people. Thus when they see something that will cause chaos in human relationships they will disagree and speak up about it and if deemed to be a very large threat to creating chaos can be very argumentative and forceful about trying to keep that chaos from taking place.

This is also evident when an XEI uses their demonstrative function and will be seen to be disagreeing and sometimes just plain argumentative. And an EXE will stifle their displays of emotion if they see they are creating more relationship chaos or express it if they feel that will help attenuate social chaos and will be seen as disagreeing and at times being very argumentative. But this is much weaker and more rarely displayed compared to Fi ego types.