You haven't digested this, because it supports the biblical creation model. If, for example, two populations differ by 10 nucleotides, and it was previous assumed that one nucleotide substitution took 1000 years, then we would have a divergence date of 10,000 years. But if actual rates of evolutionary change are measured at one substitution every 500 years, then the divergence date changes to 5,000 years.
This is one reason why creationists are pleased that scientists keep finding evidence for much more rapid change in evolutionary biology than evolutionists once supposed. The continual evolutionist refrain that creationists believe in stasis is a figment of their own imagination. It is not even remotely accurate, as even a cursory review of creationist literature shows.
But you believe in that silly story about Jonah and the whale because if it were false, your whole faith would crumble?
This is logical twaddle and nonsense. If creationists believe that evolution happens faster than the generally acccepted rate based on previous biological data, and if creationists have new data to back up their conclusion that the dating methods need simply to be revised, then there is little argument between so-called "creationists" and "evolutionists," and you are suggeting the kind of "argument" that happens all of the time in science.
I think, however, that you fraudulently misrepresent the actual position taken by creationists, who normally deny that evolution takes place at all whatever the rate of evolution, and whatever the range of variability between place, time and species might be hypothesized.