In many European countries Christians are still in charge of schools and hospitals that receive state funding. Losing those schools and hospitals is really the loss of privilege, not marginalization. It certainly isn’t martyrdom. Thanks to religious freedom Christianity now has to compete in an increasingly dynamic marketplace of ideas and it’s losing market share rapidly. Why does the cardinal not organize an ad campaign instead of complaining?
I don’t think it’s that simple. Yes, there is a lot of resentment about the decline of “Christian” civilization that accounts for part of the marginalization narrative. I’ve come to believe that there is more to it than that. When nearly everyone within a given group starts voicing concerns about being marginalized there’s something more to the story.
Speaking as an orthodox Christian there is a perception that society is increasingly hostile towards religious belief, even if we don’t seek to impose it on our non-Christian neighbors. It isn’t just that society doesn’t endorse “Judeo-Christian” values, but that society is actively seeking their destruction. That’s why something like Trinity-Western Law School in Canada can’t be allowed to exist: although it’s a private law school with historically excellent academic result, Canadian society attempts to deny it’s existence because it encourages values which find themselves at odds with Canada’s quasi-religious form of secularism. To reiterate:
Christians don’t feel (exclusively) marginalized due to a loss of privilege but due to the perception that Christians are being actively excluded from the public square, This isn’t about Christianity losing in a free marketplace of ideas, but the realization that the market isn’t free and actively conspires against Christian thought. Is perception accurate? I think it’s somewhere in between both extremes.
Of course most liberal progressives are completely unwilling to acknowledge that orthodox Christians may be experiencing marginalization or even subtle forms of oppression in contemporary society. They really don’t have a choice because they confer victim status with power and protection. Liberal progressives would be in a sticky spot indeed if they were to acknowledge they they were acting as oppressors. So I think we often see the “loss of privilege” narrative as a way to explain all orthodox Christian fears since it would be politically or socially disastrous if Christians “oppression” was acknowledged to be real. What’s particularly galling to many Christians is the fact that if any other group nearly unified voicing concerns about oppression, progressives would feel obliged to acknowledge that as a matter of social justice.
I think a good touchstone of comparison would be gay people. Now, I want to preface this by saying that I do know the experience of being gay and being Christian vary widely by geography and in some places outing one’s self as being gay can be extraordinarily hazardous to one’s mental and physical health. Nevertheless, in most cases where I have lived, being gay tends to be overwhelmingly celebrated and anything resembling homophobia (or even a lack of affirmation) is swiftly condemned. Conversely, many Christians tend to closet themselves, we tend to experience derogatory comments surrounding Christianity and Christians all the time, our job prospects are lowered as a result of identifying as Christian, and we are often automatically assumed to be “bad people” if one is actively religious. I know I would personally be much more comfortable coming out as gay than as Christian in most locations I have lived and worked. Yet even in this locations being gay denotes victim status (which I don’t think is entirely unwarranted).
TL;DR: If we except that sexual and racialized minorities experience marginalization in a contemporary society that frequently goes out of the way to celebrate them, I think it would be hard to argue that Christians don’t experience at least some degree of marginalization.