Earlier quoted context omitted.
Curious, do you think he's wrong that it's at odds with what was taught by the apostles? It's obviously unpopular, but I have yet to see a convincing argument (based in the teachings of the Bible) that promotes same-sex marriages. If I were in his position, and part of my duty is to interpret and lead via "the holy scriptures," then I would probably want to be as accurate as possible.
My understanding is that the Catholic church does not actually take scripture as the sole source for church doctrine. “Sola Scriptura” is a thing for some — perhaps even most — Protestant denominations. But not for the Catholic Church.
And, infamously and comically, isn't exactly well supported by the text itself.