Sure, the whole thing could be true. It could just as easily be false. It's unprovable either way.
Many saying Kara has nothing to gain from saying this if it isn't 100% true. Are you serious? She has everything to gain from it and almost nothing to lose.
Being a "sexual assault survivor" is in vogue. It bolsters her status in many many ways.
But go ahead and call me an "incel" for pointing this out. For the record I think Kara's running career was remarkable and the thyroid/weight thing was horribly mismanaged by Salazar and Brown.