Remember who the audience of the document is: powerful studio executives steeped heavily in the sexism that was the social norm for the era. They may not understand the philosophy of the series (and probably wouldn't have cared for it if they had) but they do understand that having pretty faces can improve viewer counts (not so different from today really) and they want to be certain that there's going to be ROI before doling out funds.
What you should be marveling at is that, for the 1960s, Star Trek TOS had highly progressive aspects, such as having women about a warship at all, let alone as officers and even the first officer. For comparison, in the United States Navy, women were not allowed to serve on combatant ships until 1994[1] and having the first woman to be assigned to command a combatant ship didn't happen until 1998[2]. Even I'm a bit surprised to discover that it was that recent.
In fact, many of the plots were used as a way to “sneak” progressive ideas past the network execs. Gene would have had to make them think he was a certain kind of person pushing a certain kind of narrative instead of who he was, pushing those progressive ideas.
What you should be marveling at is that, for the 1960s, Star Trek TOS had highly progressive aspects, such as having women about a warship at all, let alone as officers and even the first officer. For comparison, in the United States Navy, women were not allowed to serve on combatant ships until 1994[1] and having the first woman to be assigned to command a combatant ship didn't happen until 1998[2]. Even I'm a bit surprised to discover that it was that recent.
[1] https://www.history.navy.mil/content/history/nhhc/browse-by-...
[2] https://en.wikipedia.org/wiki/Women_in_the_United_States_Nav...