At this time, modernism still wears Christian clothes in the mainstream Protestant churches and in parts of the Catholic Church.
This cannot last much longer for 11 very simple reasons:
1) Modernists deny supernaturalism and therefore they are not really religious
By “religion” I mean a transaction with the supernatural. Religion (whether it is people jumping around a campfire or a Solemn High Mass in a Catholic Cathedral) is about an interchange with the other world. It is about salvation of souls, redemption of sin, heaven, hell damnation, the afterlife, angels and demons, and all that stuff.
Progressives don’t deal in all that. For them religion is a matter of fighting for equal rights, making the world a better place, being kind to everyone and “spirituality”. It doesn’t take very long for people to realize that you don’t have to go to church for that. So people stop going, and that eventually means the death of progressive Christianity.
2) Progressive religion is essentially individualist and not communal
3) Progressive Christianity is subjective and sentimentalist
4) Progressive Christianity is historically revisionist
They re-write history according to their prejudices. In religious terms, this means they are cut off from tradition. They are therefore cut off from the life-stream of real religion. As they cut themselves off from the tradition they will only have the latest religious gimmick, fad, or adaptation to contemporary culture.
5) Progressive Christianity is based on out of date Biblical scholarship
6) Progressive Christianity makes no great demands for its devotees
Ask any modernist, “Why should I come to Church?” What would he answer? “You don’t have to come to church. It’s there if you want it. If it does you good, and makes you feel better, we’re here to serve you.”
Modernist Catholic priests wring their hands and wonder why no one comes to Mass anymore. It’s because for forty years they’ve been saying, “It’s not really a mortal sin to miss Mass. You should come because you love God, not because you fear him.” While this sentiment may be laudable, they shouldn’t therefore be surprised if no one comes to Mass.
The progressive himself does not really understand why anyone should be religious. He started out as a religious man believing in sin, redemption, and the supernaturalist story. He became modernist gradually and all the time continued his religious practice, but he has never stopped to ask why such a thing should be necessary. If he is honest and asks himself the question he will soon stop the practice of his religion too.
7) Progressives allow for moral degeneracy which saps the strength out of real religion
Devotees of all supernaturalist religions demand moral purity, self discipline and restraint. Real religion requires self discipline. The modernist sees religion not as self denial but self fulfillment. Hedonists will soon realize that religion – even in its watered down modernist form – is not worth the trouble.
8) The Church of the Global South is on the rise
9) Progressives are dull and respectable
10) The Historic Christians are now the radicals
11) “All are welcome”… to leave
The irony is that their final, infallible dogma for progressives is that “all are welcome”. They never stop to realize that a religion can only be a religion if it has boundaries. It’s not a club if there are no membership rules and it's not a church if there’s no dogma or moral expectations.