I think you are making assumptions on moral values of individuals within sport. But people vary; some are honest and some are happy to cheat if given opportunity. If everyone was so honest and wanted win only the fair way, there wouldn't need to be any drug tests, because no one would even consider taking drugs to enhance their performance. But reality is, some do. And some are willing to go into such length as risking their own health to get even tiny advantage, so if a skater has a chance to cheat by claiming that they are injured and take a break in the middle of their program while they are not penalised, are you certain that none of the skaters would ever consider using it? Do you really believe that every skater would be so honest if it was a fight for gold olympic medal?