Assuming this whole thing is not tongue-in-cheek ...
This betrays a serious ignorance of history. Catholicism has been outlawed in England [the most recent example ended only a little more than a century ago], and severely persecuted in various Communist regimes, among others. "The Vatican", and ordinary members of the faithful, did not acquiesce to these pressures. The doctrine was not changed to suit the Zeitgeist, nor was the practical application of that doctrine to daily life changed. People simply accepted their sufferings and quietly resisted. And, ultimately, the opposing regimes sickened, and the Church endured.
The Church does not belong to any earthly power, but to Christ. And we are not at liberty to alter His truth to suit political whims. The state may proclaim that 2+2=5 all it wants, the delusional populace may find immediate advantage in agreeing with such error, but no force can make the statement other than false. Denying the ontological nature of a thing will, eventually, have negative repercussions. The process during which those repercussion are played out will be extremely painful, but truth will eventually prevail. And the Church will still be there, after it's all over, to pick up the pieces and start the arduous task of rebuilding civilization.
When Popes crowned kings, it was a reminder that the state existed at the pleasure of God. Nothing the king could do in the civil realm could overturn the moral law, which is divine in origin. Naturally, this chafed, and temporal rulers were quick to find ways to avoid such limits to their power.
But, just in modern times, we've survived the Protestant Deformation, which was the first attempt to make the Church subservient to the state, the murderous excesses of the Endarkenment, the Kulturkampf, the rise of nihilistic Fascism, and sundry manifestations of atheistic Marxism. I expect we'll survive the Age of Hedonism as well.
What the advocates of the Culture of Death never seem to realize is that their "philosophy" is self-limiting. It contains within itself the seeds of its own destruction. It is cultural suicide, though it will murder a good number of innocents in the process. One has only to wait long enough, and the Culture of Death will be dead. The Catholic Church always wins by simply enduring, and it will be there again to pick up the pieces after this latest human folly has collapsed under the weight of its own nonsense.
Hasn't worked for politicians...