Don't tell me to do some reading for f*'s sake, I know about Margaret Hamilton and Grace Hopper. Mayer is current, successful, and stylish. I like her. I'm trying to explain to you why there might be a 'cult of personality' around her.
Being stylish is super important (to me) because not only is she a woman in tech - she's a stylish woman in tech. I hate the typical tech uniform of jeans, t-shirts, and hoodies, but felt I wouldn't get taken seriously if I looked 'pretty'. Marissa made that ok for me.
If she wore the typical tech uniform it wouldn't detract anything for me, but she wouldn't be iconic to me.