Thanks for the share token. Yes fantastic article.
I've often thought when people talk about "intersectionality" they rarely take account of class or socioeconomic status. The issue of males in women's spaces is going to disproportionately affect poorer and more working class women. They are more likely to end up in domestic violence shelters, in prisons, or doing hands-on jobs that require changing in front of others (e.g. nurse). They also have less of a voice - and certainly less of a voice that will be listened to by the middle classes.
And Gaspode yes agree entirely that it goes further than the gender issue. In terms of race and immigration, I live in a nice left-leaning part of my city which is majority white but with a range of ethnicities all nicely integrated. Same at my work. There are other areas of my city with poor immigrant populations causing a lot of social problems, but if someone living there was to raise this, they'd be accused of racism (for balance, there are also areas of my city where it's the poor white communities who have the most social problems).
Thinking about the Sandie Peggie case, I'm sure neither Sandie nor Beth Upton are perfect. But that shouldn't matter to the general principle of females needing a single-sex space to change.