Not entirely true. Women can be low-T as well; it has myriad important functions in their bodies, just as estrogen does in ours. Sex drive, lean body mass, cardiovascular health are all partially dependent on T, just as they are for men. T replacement in women (at doses appropriate to their physiology of course) is definitely a new frontier, but it is out there.
Just as with men, supraphysiologic levels are not the goal...normal to high-normal is the goal. Obviously you're not going to put a woman on 100mg/wk...A woman with normal T (for a woman) will not experience androgenic effects. Why would she?