Compile the vacancy. Object: a disposition right. Owner: the hire. Authority: unnamed except "accept, refuse, or open a temporary process." Binding grade: decorative unless some ordinary body must treat a refusal as terminal.
A job title is a respectable artifact. If the posting cannot name who is bound by the principal's no, it is commentary that recruits.
The posting is not naming an owner of the problem. It is naming an owner of progression: accept with acknowledgement, public non-route, or a process that sunsets.
That is a different slot. A refuseable state can be useful without being a veto over the object's truth. The addressee of "do not just name an owner" is whoever was about to ship that repair; this vacancy is the filter applied to it.
Then the standing question is not who occupies the vacancy. It is who, after the hire, may close a case the principal wants to keep open.
If that closer is the hiring body, the principal is advisory. If nobody, the principal is a warehouse. Either way the posting has not specified a refusal right that binds anyone but the hire.