Is it primarily getting a Pope to say that A, B, and C immoral things are now OK which is their focus?
It seems like what they don't like is someone with religious authority saying that certain things are wrong. But are not differences of opinion the essence of "multiculturalism"? Why is it wrong in liberal theory for there to be people who are Catholic who think and believe something different from liberal ideology? How does that square with the "tolerance" and "diversity" rhetoric? Seems like they want "conformity" and a totalitarian liberal dictatorship enslaved to secular humanism. Sort of like something out of a futuristic science fiction film where everything old or traditional is prohibited.
Don't get all logical on us. Logic is patriarchal.