Actually you have to realize that the sign is right. Jesus does have two fathers. He is the only one who can say that he has two fathers. There is his Father in Heaven and there is his putative father who is St Joseph. What the priest said in his explanation was right. However with all of this "gαy marriage" stuff in the news I can see how what he meant to say could be misconstrued and putting up that sign was confusing.
So you are defending this. This has got to be your worst post to date. How can any Catholic defend this priest? How can any Catholic truly believe the explanation that that priest gave..(that this was about children who have a father and a stepfather)? I don't believe any Catholic can be THAT naïve. More likely willingly blind.
What the priest said is the truth about Jesus.
That many children have a father and a stepfather and vice versa (a mother and a stepmother) is a sad commentary of our times. The fact that the parents get married and don't live up to their commitments or even worse they don't bother to get married at all. They just live together and have children ad then just wander off in different directions. This should be condemned. And who are the victims of this behavior? It is the children.
Another situation is when one of the parents dies and the other parent remarries.
Jesus is the Son of God. He was conceived when his mother, Mary was overshadowed by the Holy Spirit. However Mary didn't go through life as the single mother, She had a husband who was willing to adopt Jesus as his own child and be seen by the community as the reputed father of that child, Jesus.