Reminds me of a product owner I had who abused priority categories by insisting that the majority of his tasks were "top priorities" because he had discovered that any time he didn't mark a task as a top priority it wouldn't get done.

Every team ended up sorting his tasks as a flat list so that when he asked people to "make this a top priority" it was up to him to decide where it went in the list and which of his other requests would get bumped.