While I think there is a point to be made that a lot of YEC comes from specific Protestant interpretations of Scripture (the 6000 years was something calculated by Bishop Usher of the Anglican Church, which was calculated with a specific set of historical, unprovable assumptions like how one should view Biblical genealogy), and the fact that there's certainly a significant degree of contradiction between specific elements of the Creation account in terms of how the Church Fathers viewed it (from what I can tell),
I think it's a grave mistake to assume that religion can have no dealing with physical phenomena, but only with a religious reality. Did not Christ take on flesh, perform miracles, convert water to wine, raise Lazarus from the Dead, suffered on the Road to Cavalry and then was Crucified (that is, the Person of God Himself), and Resurrected from the Dead, coming back to life before ascending into Heaven?
It's a dreadful mistake to say that Christianity has no dealing with physical phenomena, because to do so undermines the theological system upon which Christianity is built, where any judgments about physical phenomena (including social structures) are made completely subject to Science - a Science mind you which had completely endorsed Eugenics at one point, and a Science which today, at the university level, believes that gender is so arbitrarily constructed that one can be in "the middle" between which gender you identity yourself as.