The problem with libertarians is that they mistook acceptance for tolerance. The progressives intentionally conflate the two for destructive purposes, but for libertarians, I think it comes from an earnest belief that liberal social expansionism is possible under fiscal conservatism.
Discussion
I bet that our anarchist utopia will be pretty culturally conservative. Traditional family structures and tight communinties are naturally emergent in a society where big daddy fed isn't distorting our culture with printed money funding sexual deviants.