He spells out very clearly the answer to your question in the above link. He states that there has never been such attacks on marriage as we are witnessing now. And he goes on to explain what will be the Church’s response.
I see. That’s nice of your pope. But the issue for a Christian has already and always been settled from the lips of Our Lord Himself.
Why has a misunderstanding of what Jesus Christ said ever been allowed to gain foothold in the RCC so that the church leader has to issue new guidelines on how to handle “such attacks on marriage”.
Circular, evasive reasoning on the RCC’s part?