Multicultural Catholics in Quebec? Uh... no. Quebec is only multicultural on the island of Montreal, and is trying to pass a secularism charter to get rid of hijabs... in the public service. As for being Catholic, less and less since the Quiet Revolution in the 1960s. Pretty much nobody goes to church anymore in Quebec.
You're talking about the Quebecois liberals.
The problem is Quebec is realizing how problematic liberalism is. If Quebec was to realize independence, it wouldn't be able to support itself. Liberalism doesn't encourage productive attitudes. It encourages people to be charming, charismatic, clever, witty yes-man suck-ups who deliberately screw around in playing language games, and outcast others as being impractical according to their emotional relationships. Those who are outcast are expected to be enslaved, and those who refuse to endure slavery are abused and neglected.
The problem is this doesn't work when people aren't willing to endure slavery anyway. It also discourages production since productive people will be regulated.
Therefore, multicultural Catholicism is the answer in order to rally people together in a productive way instead of simply leeching off the system. People are universally respected for who they are on the inside that counts, and they're allowed to behave diversely as long as they don't judge each other by interfering in each other's lives without consent.
The problem is Judaism takes this one step too far in basically treating people as if they're guilty before proven innocent. It denies the diversity of human nature on an individual level, expecting people to be practically normal in the judgment of people's good works to represent a predestined calling which the chosen people can obviously detect. In reality, Judaism turns society into perpetual paranoia where everyone's judging each other in a balance of powers, so those who are goodwilling in refusing to bully others around end up getting bullied. That is those who refuse to judge end up getting judged.
That is Jews believe in rugged individualism whereas Catholics believe in methodological individualism. Liberalism, on the other hand, believes in methodological holism which denies the individuality of who people are on the inside that counts.
Without believing in internal individuality, Quebec will not be productive enough to stand on its own.