some infps are way better than others at empathizing. it's just bc Ne opens up Fi, otherwise Fi is very narrow and closed and doesn't let a lot thru. the more Ne usage and the less value fixation (ie idealism, etc), the more free-flowing it is the more infps are able to connect their feeling states to everything in the world. Ne and N period increase openness, more perception and less judgment, more acceptance and more listening and less aggressive judgment filtration.
i know some really really open infps who really can seem like enfps, but they're not bc they're sooo introverted and Fi is their first, if not their only major function. Ne is what makes infps brilliant, creative, and artistic. otherwise they're just dorky trapped-introvert versions of isfp without the Se awareness/presence and Se adaptability/style. Ne creates more and more affirmation and acceptance of what is, more possibility, more perspective (more interconnectedness).