I actually have fairly well developed Fe, and so I understand it. I was raised in the South as a female, which is practically the Fe-dom capital of the United States. Fe can and does make life more pleasant. I missed an Fe dom atmosphere when I moved to a bigger city and was surrounded by a more T mentality.
I even go to church - albeit a liberal church - and believe in participating in activities which directly serve others. Is this not Fe behavior?
However, Fe has it's dark side like every other cognitive function. I seriously think that's all that's being argued here: it isn't all giving and sharing and hugs. Sometimes it's intrusive and judgemental and leech-y.
Sure, Fi can be selfish. But don't forget that Fe users are sometimes so focused on what they think is so right for the group, or so socially acceptable, that they end up hurting individuals. Or they can wander off into codependency land, which is in reality (no matter how it may appear on the shallow surface) just as selfish as having a stubborn attachment to inner core values despite the wishes of others.