Curate, connect, and discover
I believe that Kirkbride’s original idea for the Bosmer (as he outlined in the concept art you’re referencing (no, I don’t know why it’s a nexus link, that’s the only place I could find the version with his notes))
https://staticdelivery.nexusmods.com/mods/110/images/105701/105701-1606858796-124772823.png
was the male and female bosmer represented two different sides of our fairy myths. The women are the ethereally beautiful, good (or at least noble), fae (descended from the gods of Celtic myth); Titania, the Tuatha de Danann, the Leannán Sídhe (Tolkien’s elves also are a deliberate reference to these fae) - while the men are the little, sometimes evil, or at least trickster, fairies that we find more in medieval stories; Puck, the Fomorians, coblynau, pixies, boggarts, kobolds, etc.
to put it another way: the women are goddesscore and the men are rodentpilled
Also, for what it’s worth, Kirkbride wrote that the men have “lost their power of glamour”, so it could be that women are also ugly, they just use magic to conceal their appearance. Which is also very fae.
You know what bugs me? Bosmer males. Look, idk how ESO does things, but from Morrowind to Oblivion they seem to be the butt of a joke that just says, aren't short men with squeaky voices funny and juvenile and stupid and ripe for mockery? (Fargoth, Gaenir, Glarthir, The Adoring Fan. I don't remember any Bosmer in Skyrim, but then I haven't played Skyrim since like 2015.) Plus there's that old lore about how the Bosmeri women are hot and the men are not, and frankly, fuck that. Where the short king Bosmer at? (Please share any cool Bosmeri male OCs with me.)