That's like claiming that most people talking about the subjugation of women and girls in Iran are only doing so as an opportunity to bash Islam. Even if this unevidenced claim was true, women are still being treated appallingly, regardless of anyone's motivations for raising the issue.

For your information, I have talked to women adversely affected by male athletes competing in their leagues. The issue is not particularly complex to understand, most people can easily see the inherent unfairness in this.