How come its okay for black women to prefer light skinned men ,?

but not okay for black men to prefer light skinned women . i mean i think the whole myth that black men prefer light skinned women is blown WAY out of proportion. and when a black man states he prefer light skinned women controversy and deep social topics come up .but when a sista say she prefer light skinned guys nobody says a thing. so i asking why black men are always put under the microscope for liking light skinned women but black are not black women. why do some sista complain about black men liking light skinned women when some of them prefer light skinned men . i got a lil bro who is light skinned and dark skinned women used to say we can make pretty babies .there was alot of dark skinned girls that used to try to get my lil brother to impregnate them with no string attach no child support , no obligation. why some black women always try to place the blame on black men?