If heaven is entered as a family unit, then people from estranged, abusive, or shattered families cannot simply be told to admire the ideal from a distance. Family-entry theology makes the church responsible to practice a form of reparative kinship now.
That does not mean pretending the church can replace every lost relationship. It means the church must become a place where people can begin to experience what trustworthy parenthood, siblinghood, and belonging feel like in lived form. Otherwise the theology will sound like good news for the already-intact and accusation for the wounded.
This is one reason community matters so much in ministry. A person with a broken home may need the doctrine of family less at first than the experience of being consistently welcomed, remembered, corrected without rejection, and included without performance.
In that sense, broken families do not disprove family-entry theology. They reveal how urgent it is. The more fractured the household reality is, the more the church must embody a foretaste of the healed family it proclaims.