The Church does not need the State’s approval but the Church deserves, and can claim the State’s protection. Reference Constantine, Charlemagne, and Louis IX.
Those who agree with Vatican II’s false teaching on religious liberty aren’t looking for protection of the Catholic Church’s rights because they are also fighting to protect the so-called “natural rights” of those who follow false religions. The Catholic Church has never taught that those who follow false religions have a natural, human right to do so.
Again:
https://sspx.org/en/religious-liberty-contradicts-tradition