I mostly read (hard) sci-fi written by straight white dudes, so the tweet on the screenshot made me feel a bit defensive. In the replies and qrts people are patting themselves on the back for reading marginalized fantasy writers exclusively and this "consumption as activism" seems rad-libby to me, but maybe I'm wrong.
Aside from Earthsea which I remember loving when I was young, The Golem and the Jinni by Helene Wecker and Jonathan Strange and Mr. Norrell by Susanna Clarke are both great fantasy novels. Both are set on near modern earth which isn't everyone's fantasy cup of tea of course.
EDIT: Oh also Piranesi by Susanna Clarke is also really good. I also like The First Fifteen Lives of Harry August by Claire North, which is about a man who lives the same life over again every time he dies, and who comes into a very complicated conflict with one of his reincarnating peers.