McGreevy does have very concerning batted ball metrics
One must ask ‘concerning’ as compared to what, or who? McGreevy is a survivor of the attrition war. If the organization stays the course, the rotation will be populated by the survivors, not necessarily by those who sport the fanciest batted ball metrics coming up in the system. Judging a pitcher who can stay on the mound against one who can’t is apples and oranges.