To moderators/downvoters: It is said that defending a cause with bad arguments is the most pernicious way to combat it. Similarly, resorting to authority and censorship to defend a cause must be the surest way to ruin it.
We have seen sexism actually grow in the last decades in this field, and i start to worry that this attitude of dealing with it with the argument of authority or other threats on one's carrier may just be one of the causes that we are slowly losing this ideological battle. Or maybe just a symptom?
To the extent there are factors which systematically work against opportunity, there's both a moral issue, and a pragmatic issue (i.e. losing good talent) at play, before we get into the more controversial issues of representation and equality of outcomes.
It's perfectly understandable that less economic and social pressures lead to people choosing things they actually want. It just happens to be that there's a notable difference in women's choices under those circumstances.
It certainly seems like there's substantial misinformation out there these days.
Countries that are more egalitarian and have more social mobility have STEM percentages that are decreasing as the same society becomes more egalitarian over time because the women have other options, and they choose to take them.