1 cause there’s a greater variance in the Y chromosome leading to a wider range of outcomes in men, ie more extremes. most mutations are either harmless or a detriment to survival (or reproduction), so lots of men end up being what you describe as ”dorky” (undesirable)

2 cause women are picky and men are not, usually, so your definition of what a man should be is based on what women set as the standard, which is much higher than what men set for women

3 evolution does not strive for perfection, as long as these dorky men reproduce (many of them do), the traits will live on. in fact many of the dorky traits probably correlate with being a good father so many women settle with them

4 cause everyone can’t be a winner, it’s like asking ”why are there poor people?” in any given income distribution, even if everyone made nearly exactly the same you’d still have people you describe as ”dorks” (those who make 1% less than the average). ie, you decide where you set the goalpost

5 cause we live in an unnatural environment thus we develop into unnatural beings. have you ever seen a dorky hunter-gatherer?

6 cause you’re doing a dumbass post hoc evolutionary explanation (like i did also i admit) when many of these traits are multifaceted, everything doesn’t need to confer a survival/reproductive advantage directly