How had Reinhold Messner's ascents on Everest in the late 1970's and early 1980's substantially altered elite climbers views about summiting the mountain?

Reinhold Messner was a legendary climber who had summited Everest without oxygen twice. This changed the viewpoint of elite climbers as to what can be done on Everest. Climbers who were not elite or ones that simply had bad luck paid the price for thinking they could push the boundaries like Reinhold did.