you can tell what generation a person places themselves in by analyzing their reaction to radiohead, who sort of form a generational bridge.
there's younger people that have barely even heard their classic work - we call these millennials. unambiguously.
and, there are plenty of older people that started off listening to their 90s works and then kept listening as they changed their style. these people are on some kind of cusp, but have decided to move with millennials for social advancement or whatever other reason.
then, there are people like me that grew up on their classic material, and tried to give kid a a chance, but ultimately rejected it. i like amnesiac better; always have. kid a is a mediocre record. C/C-. we're gen x, and not interested in what millennials think. at all.