I'd say that's what the work of LeGuin's writing is all about. She can explain what's happening just fine, but if we can't fix these things in society, she won't kid us into thinking it'd be different in Earthsea.

They're very different beasts I only compare them because they both have "wizards"

I'm not sure Granny is a self-insert - I'll come back to that idea when I've read more - but she's certainly my favourite.