I think instictual variants in enneagram is a good way to identify the variations between how much Fi polRs care to connect but overall, not feeling any need for emotional connection is probably something more related to sociopathy or some sort of antisocial disorder than anything else. Fi polRs in my experience also care about it but they dont tailor their approach depending on closeness compared to the rest.
For example its not like Fi polRs dont seek romantic connection or care about some people more than others. They also get anxious about the expectations people who are close to them have according to descriptions.