Joseph Heller's Catch-22. One of my favorite works of literature of all time. It plays on the repeated bureaucratic fallacy that a pilot who wants to be grounded from combat is sane enough to obey orders and therefore cannot be grounded from combat, denying pilots in the story any ability that they should by all rights have to discharge their service.
In essence, requiring people who want to affect some kind of change to qualify for the ability to make change on the basis that they wouldn't want to affect change, is a form of control that is prevalent in society but intuitively should not be self-sustaining as a system. It takes no brain thinking at all to realize that this cannot possibly be the criterion to apply in ethics.