I haven't seen anyone talking about low T. My doctor has found that many millennials and z have T under 300. One of his patients was about to divorce because he didn't want sex. A San ball change in diet and exercise saved that marriage.
Now look at the world of singles. T increase risk taking. What if we have several generations of low T and therefore loss desire for risk. Let's exclude the modern reality of women posting men who approach them to social media as if they are creeps. No T means no risk taking.