I didn't see anyone supporting cheaters and cheating.
Don't be naive. Statements like "nobody proved
he cheated" and "winning isn't cheating" indicate that some folks are perfectly fine with doping, as long as the athlete doesn't get caught, and even if they do get caught, well, it must've been trumped up somehow. Nobody's going to come out and say
"I'm fine with cheating," but those attitudes are a great way to support continuing it.