Socialism can not be libertarian.
This is true enough, but a libertarian can be a socialist; just not a
statist. If the socialist order is non-coercive, any libertarian should be fine with it's existance, even if he doesn't agree that it's an ideal social order. A fine example is a hippie co-op type farm, wherein adults not related to one another
agree to live in a communal fashion. History and reason both tell us that these adventures aren't sustainable, but that's irrelevant. Another example is an 'intentional community', or even an extended family living together in the same household. It's the idea that the social fabric of a happy homelife can be extended to the whole of society that drives the 'feeling' youth towards the socialist worldview. Children who grow up in dysfunctional families are much less likely to fall for that crap.