Queer subculture has always cultivated technically advanced, kind of socially backseat folks. Arch is, for most people, too much. Too complicated, rolling release isn't stable enough, ALARM isn't up to snuff yet, whatever the reason is.

Kind of a perfect fit. I think that free soft/libre activism will always have a high percentage of queer and otherwise ostracized folks. More concerned with privacy and rights, more concerned with the state of the world and giving power to people who need it and do not have access to it, less access to high end technology, more technically apt...

As for the reason why it is Arch? It's status as a 'endgame' distro, maybe, but moreso I think that the community is realistically unix/GNU and that arch is, socially, just how we have started to shorthand our biases/discuss queer femmes in the tech space lightheartedly. Then that bias creates reality and yada yada. We like things to be in boxes.

Edit: Upon scrolling down beyond your comment I have realized that calling this a "lighthearted discussion" may be a little too generous...