I’m not accepting definitions from Young-Earth creationists. They fall apart with the barest scrutiny.
There are “operational” components to estimating the age of the Earth; Geology, radiation decay, study of craters and the moon samples.
Secondly, there are “operational” components to Evolution; we can turn on ancient genes in animals from their long dead ancestors.
There’s no reason for those genes to be there, unless they’re related. And Evolutionary theory predicted those genes would be there.
Young earth creationism is just an excuse for bad theology. Presuming they understood what the Bible described, instead of trying to alter their interpretation to meet the evidence.