This has nothing to do with sports, it's all about politics.

See the documentary "the race that shocked the world" and you will see what I mean. A couple of nuggets from the documentary. Ben Johnson is seen as a cheat and Lewis as the winner. Where he shouldn't have been there in the first place. As he tested positive and was covered by USADA or however it was called then.

Then the guy that was commissioned to create it, found out that the real purpose was to cover US athletes in LA84.

Then you would also have reasons to ban China, UK and Spain (where I am from), Jamaica, Kenya, ... not necessarily in that order.

Is Russia the worst of them all? Maybe, who knows. Although I doubt China is any better, if not worse.