I am always confused about who qualifies as a millennial? Does a 14 or 16 yo today qualify as a millennial? Is it 18-35 year olds? Is the people who grew up ar

I am always confused about who qualifies as a millennial? Does a 14 or 16 yo today qualify as a millennial? Is it 18-35 year olds? Is the people who grew up around the millennium? That group must be ageing by now. Then why millennials’ habits matter so much?