That’s a big misconception, there are lots of things at WDW absolutely worth seeing. At MK the old classics that are no longer at DL like the People mover, Carousel of Progress, correctly placed Astro Oribtor, Swiss Family Treehouse, Country Bears. Better Winnie the Pooh, Splash Mountain, and arguably Jungle Cruise and Haunted Mansion. Plus unique stuff like Hall of Presidents, and Seven Dwarves Mine Train. Epcot has all of World Showcase, Spaceship Earth, The Land, and Seas. Plus Disney Springs, the water parks, and the different resorts to experience. DHS still has Rockin Rollercoaster, Slinky Dog Dash, and the original Tower of Terror plus unique restaurants like Sci Fi Drive in, and 50s Prime time cafe worth seeing.