This is not quite true. He certainly did lead dangerous missions, including the August, 1943 raid to Regensburg. But, he did not lead all. Group commanders in the 8th Air Force took their turn as Command Pilot leading the group or air division on specific missions. They shared this duty with the other senior officers in the Group. LeMay may have picked the toughest missions for himself, but he did what his fellow group commanders were doing. He led a few missions after being promoted to Brigadier General and becoming CG of the 3d Air Division. But, at some point, he was grounded because of his knowledge of the compromised Enigma codes. This restriction applied to all who had such knowledge as the Allies could not risk their falling into enemy hands.
The restriction continued when LeMay went to the 30th AF, although he made have sneaked on a few missions. LeMay was courageous, no doubt, but so were countless other general officers. When LeMay began his combat duty in 1943, the Navy had lost several admirals in surface actions in the South Pacific. Three Army generals had been wounded in fierce combat at Buna in New Guinea. In World War II, generals who led from the front were commonplace.