Hold on - I seem to recall you defending Usain Bolt when I pointed out that he was a blatant drug cheat as well.
The evidence against Usain is no less compelling than that against Farah.
Mind you, the best solution is to simply treat athletics and cycling with the disdain they deserve. I just don't pay attention to them at all because the cheating is so obvious. Not that I ever paid attention to cycling anyway.