There is something to be said about abandoning the generational lines though. Pew Research is doing it
As I understand it, only baby boomers are somewhat unified on things and every generation after that drifted more and more into being less distinct, demographically speaking, as a group. The cadence you reference was unified by the end of WWII and, naturally, diffused from there.
Yeah, but now we’re drifting into specialized fields and I would suspect that geneticists ignored all the traditional labels in the first place. I’d imagine they define things like that by the rise of a particular mutation, for example.
Generation, as a laymen term, is exactly that. A temporally similar social group.