Regarding Title IX, there are still cases working their way through the courts, so we will have to see.
I would be very surprised if colleges letting males enjoy women's locker rooms, and therefore not providing women any single-sex place to change, isn't ruled as being sex discrimination.
Keep in mind this issue is about privacy and dignity and safety for women, not about giving men whatever they want whenever they want.
While you may have whatever feeling about any issue, legally this isn't about "privacy and safety and dignity for women", it's about discrimination. And it's extremely difficult to contort shared facilities into "discrimination".
I would be very surprised if colleges letting males enjoy women's locker rooms, and therefore not providing women any single-sex place to change, isn't ruled as being sex discrimination.
Keep in mind this issue is about privacy and dignity and safety for women, not about giving men whatever they want whenever they want.