No not at all, the stretch is what you say. No offense but you’re telling me a perfect cloning process exists? All cell mitosis has a mutation rate in all living things. Trees are not exempt. A sport is a super quick mutation, somewhat rare. You can determine clonal age with certain molecular tests. These mutation rates and the amount of mutations we collectively call aging. This is not in dispute, clones do age, nobody I know says they do not. It is the way of the world. Here is an article about the clonal age of aspen trees, and how it is affecting their ability to reproduce sexually. The article backs what i say. This article was written 8 years ago.