I think that athletic leagues that are setting limits on serum testosterone levels have already headed down the right path. And such regulations don’t run afoul of any of the language in the Equality Act.
This is an issue we have to address head on anyway, because even without the Act, federal Title 9 regulations already ban sex discrimination in college sports.
Contrary to the alarmism if the Act’s opponents, Title 9 has not eliminated women’s sports programs.
It’s quite possible to regulate sports programs while allowing trans women to compete fairly.