Naming the movement 'agile' was a mistake, because the word is indefensible: nobody will ever admit to not being agile, while nobody claims to be an extreme programmer without having done the work.

what I don't like about it I didn't like about it then and still don't like about it is it's not defensible. Nobody's going to say I'm not agile. Oh no, I prefer rigid development. Oh, I prefer inflexible development. No, everybody's going to say that they're agile, which extreme doesn't have that problem.