Should Cathedral Ceilings Be Vented

Cathedral ceilings are vented at the ridge and eaves to allow airflow through the ceiling. Therefore the pink "fiberglass insulation" shown above should be installed using un-faced batts or blown-in I am tossing around different vented cathedral ceiling design choices. I would like to get close to R60.

Venting A Metal Roof For A Hot Climate Metal Roof Vents Metal Roofing Systems Standing Seam Metal Roof
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Venting A Metal Roof For A Hot Climate Metal Roof Vents Metal Roofing Systems Standing Seam Metal Roof