I find this theory really interesting, and the fact that it is possible to reverse the epigenetic aging process to the unknown “backup” described in the article

I find this theory really interesting, and the fact that it is possible to reverse the epigenetic aging process to the unknown “backup” described in the article would support a mechanism that is coordinated like this rather than random. But it’s possible that the changes are indeed random or probabilistic and that they simply build on each other over time in a way that merely resembles coordinated aging.