Martina made a statement that a male person could become a transwoman by taking the necessary hormones and compete in female sports. This is a true statement and I don't think it's being challenged.
She also said that they could win money, medals and sponsorship. Again, not challenged as far as I am aware.
However, she went on to say that they could then transition back to being male and this is the part where Rachel McKinnon et al are calling her transphobic.
So, the bit I want to say is this. The Olympic Committee who set the rules to allow transwomen to compete with women also state this:
2.1. The athlete has declared that her gender identity is female. The declaration cannot be changed, for sporting purposes, for a minimum of four years.
It's written in the guidelines that men can transition back to being men after four years.
How can they say that Martina's statement is transphobic and this one is not. They are both acknowledging that detransitioning can happen.
What's the problem?