I kinda get it, I found myself frustrated as a student learning about story structure because it felt like it spoiled all stories too. But rather than the framing of these things as laws of nature I think it’s better to see it as more like known formulas for making a story compelling. The three act story is so common because it’s relatively snappy while containing all the things necessary to make a story work. Like, there is avant-garde storytelling (especially in theater and film) that completely says “fuck you” to story structure, but at its best it’s not something most people will enjoy. It tends to revel in the fact that it’s unsatisfying or confusing, it looks at the structure of its media and asks what if I did something different. And it really teaches you the reason for convention.

But yeah LeGuinn’s big thing is using what if scenarios to shine light on society. The main books people recommend are The Left Hand of Darkness which is about a man from earth serving as the initial ambassador of a union of planets to an ice world where everyone is both male and female, which is used to explore gender relations in the real world, and The Dispossessed which serves as more of an imagining of the problems and struggles of a free thinker who grows up in an anarchist society as he visits a far more geologically fortunate world engaged in a cold war style conflict.

I bring her up because her fiction isn’t subtle about its exploration of real world ideas and themes. Ultimately I don’t think anyone should have to like fiction, but I do think it’s valuable to understand why people like it and the intellectual value we can get out of some of it