In 1899, Pope Leo XIII wrote a letter to James Cardinal Gibbons, Archbishop of Baltimore. It's entitled Testem Benevolentiae Nostrae. In it we see that the current push to accommodate Church teaching to secular culture goes back at least 115 years. In the fourth paragraph down, we see that Pope Leo addresses that quite directly - and rightly condemns it.
What do we see coming from the sin-nod? What did we see in that pathetic homily, when Pope Francis scoffed at disciplines instituted by his predecessors? Besides the blasphemy therein, we saw evidence of trying to "make the Church relevant to the culture". No! We must conform the culture to Jesus Christ and His Church. We will be hated for it, but that is how Jesus Himself was treated. We can expect no different treatment for ourselves.
Let's stop coddling the culture and get going.