Except the cells used for procreation are also part of the cell line, and do require "debugged molecular pathways" (nature doesn't debug, nature makes things recover from errors, though not always in ways you'd like)

This reason for death does not really make sense. Only the connections between cells get reset. The cell line has to continue, with the potentially problematic molecular pathways (look at all the mitochondrial DNA syndromes).

In fact, if you think about it, there is a continuous cell line between that skinflake you just shed and the very first time DNA started replicating on this planet.