Yes, absolutely. I think LeGuin is the last "great" Utopian writer we've had. The Dispossessed is a beautiful work, and one that doesn't have a dark heart. It has bad parts, it might not last, but it's not Omelas. You're exactly right, Omelas is about how we the reader would choose.
Would you leave everything behind because of evil? Would you live with it?
Would you leave everything behind because of evil? Would you live with it?