(Values can be contradictory/inconsistent. E.g. you say you value self-preservation, but you also enjoy whacking your head with a hammer. That would be a kind of irrational. That's not what I'm referring to though.)
I think they make a category mistake when they do then. Values tell you where you want to be, rationality is a most accurate process to get where you want to go and maybe to check if you want to be there before actually getting there and checking out personally. (I think we basically agree btw btw, it is all those other people who are wrong :))
People basically do say that, though.
(Values can be contradictory/inconsistent. E.g. you say you value self-preservation, but you also enjoy whacking your head with a hammer. That would be a kind of irrational. That's not what I'm referring to though.)