I have noticed a few flaws in saying that Christianity is the father of, or a proto version of, global liberalism in toto: 1.they usually have a very prot/Lutheran post-Hegelian understanding of Christianity 2.they ignore when Jesus said "my kingdom is not of THIS earth".
In terms of cryptocalvinism yes, as a secular and political perversion of predominantly Anglo-American Christianity, I'm just critiquing the notion that one type of metaphysical universalism (ecumenical Christianity) translated to the political universalism of liberalism.