The priest who originally did that said that he was concerned about the children of families where there was divorce and remarriage or other situations of blended families. It was not about "gαy marriage." I think that we should give the priest the benefit of a doubt. God, Himself was the Father of Jesus and St. Joseph was his foster father. So, in a backhanded way Jesus did have two fathers.
Conciliardom is all about "backhanded ways," double-speak, and forcing square pegs into round holes, huh Poche...
The only thing I see "backhanded" in your assessment is your slyly implying that God and Joseph are analogous to "2 dads" in the context of divorce/remarriage/blended families. Blasphemous!