Marriages joined by God are indissoluble and clearly not all marriages are joined by God. It is up to couples with the help of pastors to discern the path that leads to reconciliation. This may well involve an annulment, but there are many instances in which that is not an option. The modern day pharisees point out the canonical irregularity and tell the couple they can be reconciled but only if they live as brother and sister. The teaching that divorced and remarried couples in every case are committing adultery by engaging in loving sexual relations has not been accepted. I would guess that most faithful Catholics would find it ludicrous. Might they be wrong. Perhaps. But the assent of the people may not be disregarded.