(answering a question if autistic men can be attractive to women)
Well, think about it this way:
Women are generally attracted to men who display leadership qualities. Take into consideration that in most of human history women would favor men who held power, station, and authority. The attractive man would be the man that all others would look up to, and respect.
Given women's propensity to follow, lack of moral compass, lack of self-direction, and tendency to submit herself to power, the moderately autistic guy would not be mentally fit to stand amongst his peers as a leader, much less as an equal. When life becomes more about survival, and bringing home the bacon, people would very likely not have any patience for his weird quirks and tendencies. His inability to read the room, and recognize danger, would likely result in him being killed. His deficiencies would most likely preyed upon by male competitors. A woman in this sort of world would be seeking a mate who could provide security, wealth, and the power and ability to make provision for her welfare.