The thought for the bent portion is first and foremost protection for the steering stabilizer. Not sure if its clear or not but the bent portion is past the cooler, holes would serve no purpose there.
Who knows, maybe at highway speeds it will push air under the axle and not thru it.![]()
After studying the pictures and then looking at my truck I see your point. On the hwy that may even improve cooling. On the trail where it's really going to be heating up I don't know if it will help or hurt. The cut out logo may actually be helping with cooling so if the logo goes I'd consider dimple holes in its place.
On my truck it wouldn't matter. PO actually put a transmission style cooler and moved it up to the grill.