"I'm discussing Ursula K. Le Guin, who, and despite advanced age, is big on Transgenderism..."

I read a lot of science & fantasy fiction and certainly the gender bender element is "inclusive" growth Industry stuff...I suspect a lot of authors get asked by editors to put a gender ambiguous character in to widen the readership.

But of course it's called " fantasy" for a reason. These novels are full of the kind of wishful thinking we indulged in as children with batman costumes (mine was home made...)
The average fantasy novel these days involves a hero: invariably female: some waif girl who through hard times becomes an exceptional swords-woman/martial arts expert beating the men at their own game...who then discovers that she also has hidden magical powers of some kind...and maybe throw in a special relation with a beast or dragon too.

When I look at these unfortunate women signing up in Ukraine for a short life in the trenches or Israeli female Tiktok "soldiers" doing their dance routines it makes me feel quite ill that such cosplay fantasy has brought them to that...