Millennials are those people born between 1980 and 2000 — an arbitrary block of time containing many diverse people (including most of my students!), but because we’ve got a label, we get to stereotype them. And isn’t that just a solid indictment of the whole principle of stereotyping right there, that we can do it over such a meaningless distinction?
What it’s really about, as Matt Bors explains, is providing us old people with reasons to complain about those young people, which is a way we geezers try to boost our self-esteem.