I was expecting this "rock star" to exhibit sexism by promptly joining after he was told he'd be reporting under a make. But...no. He joined after significant alterations to the deal, including a bump in position and salary.
It might be gratifying for the author, but it's kind of irresponsible for her coach (whatever that is...) to claim something without any evidence at all.
We can't just publicize articles claiming we're victims of emotionally loaded, cultural taboos without any hard evidence whatsoever. Consider that if she hadn't explicitly put it in the title or the story itself, this story would not have signalled sexism to readers.