All spaces should be safe for all women.
Any attempt to designate specific safe spaces for women as a benevolent gift of the patriarchy (outside of which boys will be boys) harms women.
Any attempt to carve out exceptions to who counts as sufficiently a woman to deserve safety as a woman (especially legislated for by the governments and courts of the patriarchy) harms women.
If a 56-year old white man can understand this, anyone who claims not to is a liar or a dimwit.