Libertarianism isn’t a cure-all, it’s just necessary (at least a lot of it is) for the protection of whatever makes life worth living.
If social justice—equality of outcome—is to be achieved the only things that can be allowed to count are things like formal qualifications that a bureaucracy can measure and administer. Otherwise control is impossible and there is room for endless arbitrariness. Big government must therefore work to make idiosyncratic choices, habits and relationships as irrelevant to practical affairs as possible. But freedom, virtue and love essentially involve personal choice, habit and relationship. Big government must therefore make them as ineffectual as possible. The effects of choice must be muffled, vice and virtue confused, love debunked as favoritism, or as dominance and dependency. How can any of that be good?