It's probably incorrect to assume there's a single group with a single explanation on the subject. There are groups that will argue that dating methods assume

It's probably incorrect to assume there's a single group with a single explanation on the subject. There are groups that will argue that dating methods assume that we know initial conditions and assume that certain parameters are constants when they may just be drifting more slowly that we can notice over the 100 years or so that we've been able to measure them. On the other hand, one of my fraternity brothers got religious his senior year, moved into a kosher living space, finished his Physics degree from MIT, and then went to a yeshiva in Israel. Last I heard, he was a rabbi in the Boston suburbs. I think he believed the Universe is billions of years old, but he did tell me that there are some rabbis that will tell you that when God created the first trees that first week, if you drilled into trees, you would find hundreds of rings as if they had been hundreds of years old, and likewise for isotope distributions in rocks, etc. This is much harder to argue against because it makes not falsifiable claims, but fortunately, it's also much less dangerous... it doesn't deny science's ability to forecast the future or contradict our best understanding of how the world currently works.