Link Harvest: Adam Ruins Everything On Millenials
A good 20 minute talk by Adam Conover on many of the fallacies of generation naming, but with a nod to real demographic study and analysis.https://www.youtube.com/watch?v=-HFwok9SlQQ
TL;DR -- Yes it's true that generational experiences can have broad impact, and we can study certain statistics about any age grouping. But the modern idea of grouping "generations" with catchy names is mostly an invention of writers imposing their stereotypes about younger people on young people (and young people reciprocating to the previous generation).
In terms of marketing, most of what people try to do is lazy and insulting. Since this was a conference to marketers, did not get into the demographic trends that are useful in the aggregate for certain kinds of analysis.