It does not matter if the boxer is or is not transgender, sex pref, passport gender, what is legal in the country, etc. All of that is a distraction that these females likely do have the xy chromosome.
The rationality is clear. One boxer did not challenge the IBA action. One did and then dropped. One imagines this is a very big deal to these boxers. Boxing is their identity.
If this was fake news, these boxers would reveal their test results to prove the case immediately after they were disqualified. And they would do so now asap.
They did not and will not. And this will be the tell.