Well on an elliptical depending on the skirt, there is a potential for getting tangled in the machinery....step exercise also.
Note her picture where she is just in yoga pants and a shirt (top).
IF she is truly concerned about modesty and is going to a women only gym why the need for the skirt???
This is typical red diaper doper baby victimhood demanding that the world obey their rules
This woman is an Orthodox Jew, not a “typical red diaper doper baby victimhood demanding that the world obey their rules”.
In her picture she is not wearing yoga pants. She is wearing black leggings with a standard black skirt over it. I bought them for years for my own daughter.
The reason for modest clothes when going to a woman only gym is that it is possible for there to have men pass through, workmen for example. This kind of gym minimizes the interaction with men but cannot guarantee it.
I have attended women-only classes with other Orthodox women and many continued to dress modestly, with loose skirts and leggings. The gym was overreacting in changing their policy towards exercise clothes after she had used them for years.