It's that they can feel very ingenuine. They tend to pander far too much to other people's needs, and when you try to understand them, they always seem to deflect. Maybe that's just an unhealthy ENFJ thing, but it's very frustrating to me. Sometimes I ACTUALLY want to know what their problems are. Plus, I know this ENFJ and he always fake laughs whenever I tell a joke or when I laugh at something in a show or when watching comedy. It's really stressful and feels almost condescending (I know it's not supposed to be), but it makes me feel uncomfortable. I feel so much better if someone laughs, or experiences an emotion because THEY feel it with their Fi, because it means it touched their heart in some way, and they truly related to it.