The US media, and Americans in general, care about doping. They do not like doping and they tend not to excuse it. This is not a media fed craze, and if folks outside America are being told that, they are being lied to. I cannot tell you how many of my friends and family who don't care about skating, have asked me about this. (ETA: because they know I do care about skating

) And it's not because they love the media or being misled by the media that they are asking me.
Oh they don't like us, oh they're out to get us, oh it shouldn't be banned, oh it doesn't have an effect. Americans have heard it many times for many athletes, American or not, and most fans/general public are not real big on the excuses. So the more there are excuses, instead of consequences, the more the story flourishes.
Americans would not have cared about Kamila Valieva or known her name if she scored 400 points at the Olympics. They do now. And that is the result of the positive test.