I find that the role function tends to be the one people are most consistently annoyed by. I think being that it is devalued, but also the most consciously prominent of the weak functions, it tends to provoke the most common negative reactions for people. It also shares the same temperament with our dominant function, meaning that they occupy a similar "space" in our consciousness; thus, having our role function activated or struck is more contradictory and invasive to our natural state.

PoLR/4th function is weaker and less valued, and therefore something we are intrinsically more averse to, but it is so peripheral to our natural state (being both weak and of opposite temperament to the dominant function) that it really just doesn't register most of the time. Also, the PoLR can function in the same "block" as the dominant function, whereas the Role cannot, meaning that even while it is weak and not something we pay much attention to, it does have relevance to our most natural focus, rather than being antagonistic to it. I think it is partly BECAUSE it is relevant, in terms of functional blockings, to the dominant function, that it can be such an embarrassment: the Role is something we pay less attention to because it is divergent from our prominent focus and generally seen as unimportant/irrelevant, but the PoLR has relevant overlap with the dominant function, meaning that a hit to the PoLR is, in some way, not only pointing out our weakest spot, but also reflects poorly on our dominant function, making us look or feel weak in something we are normally confident in. Having your strengths and confidences undermined is much more threatening than simply having your weakness exposed.