What do they think it means? It means he opposes homo marriage. Ain’t that hard to figure out.
The Pope expressed his concern about the family in his address to Congress:
"It is my wish that throughout my visit the family should be a recurrent theme. How essential the family has been to the building of this country! And how worthy it remains of our support and encouragement! Yet I cannot hide my concern for the family, which is threatened, perhaps as never before, from within and without. Fundamental relationships are being called into question, as is the very basis of marriage and the family. I can only reiterate the importance and, above all, the richness and the beauty of family life." - Pope Francis
Be it same-sex marriage or divorce, why should anyone be surprised when the Pope takes steps to show his displeasure.