To be honest I don’t consider something being Russian as automatically 100% false. This case from the IBA seems likely made up, or at least it is until they provide further proof, which they didn’t so far.
That said, this is irrelevant in this particular conversation. Real or not, that precedent is in my opinion partly responsible for why people decided to attack this particular athletes. I agree with you on the next country also playing a role.
Basically my whole argument is that there are multiple factors that made this a case. The fact that she “broke records” or “had success” is generally very low in the list, imho.