Obviously, Harvard will gladly reduce fees prorated by the number of hours the gym is off-limits for the haram male students.
/sarc
It wouldn’t shock me if this was a ruse. Unattractive women have complained for years about mixing men and women in the gym. The men pay attention to the hot women and the unattractive women feel left out. So to end their victimhood, they want separate facilities.
I doubt they have very many Muslim women interested in the gym. Think about it.