That said I had initially assumed that the reason for using women specifically was probably that the male median age didn't increase in the same time-frame, but it looks like it's pretty much been in lockstep (https://www.census.gov/content/dam/Census/library/visualizat...) so it's an odd choice to not just mention the median age of marriage instead of women specifically.
Men are pigs (see that's a fact and an example of a moral judgement), and are almost exclusively to blame for the spread of STDs. Doesn't change the fact changing female sexual norms change sexual network connectivness and therefore how STDs spread
“The median age of female's first marriage was less than 22 for 100 years and rose to 28 in the last few decades”
and not
“The median age of male's first marriage was less than 26 for 100 years and rose to 30 in the last few decades”
or the neutral
“The median age of first marriage was more or less stable for 100 years and rose by about 6 years in the last few decades”
Judging others based on what we feel they really meant to say is a very dangerous course.
It actually is the more impactful number which was relevant to my original point (people are staying in the dating pool for a longer % of their life)
You may have had that point in your mind, but by choosing to only mention the numbers for women, the point you made was “women are staying in the dating pool for a longer % of their life”.