I don't know what fraction of those athletes cheated. But I consider my definition of "win" to be reasonable regardless of how many competitors cheat.
This reminds me of a famous quote[0]:
> When Abraham Lincoln was asked by a prosecuting attorney, “How many legs does a sheep have?” He replied, “Four.” The attorney then asked, “If you called a sheep’s tail a leg, how many legs would he have?” Lincoln replied, “Four. Merely because you call a sheep’s tail a leg does not make it one.”
[0] https://quoteinvestigator.com/2015/11/15/legs/#:~:text=When%...
"I just bought a 2-bedroom house, but I think I get to decide how many bedrooms there are, don't you? "Fuck you, real estate lady! This bedroom has an oven in it! This bedroom's got a lot of people sitting around watching TV. This bedroom's over in that guy's house! Sir, you have one of my bedrooms, are you aware? Don't decorate it!"