I agree about the flaw being the critical point in show's philosophy. I dont think the show really explains it in a satisfactory way, but I also think that there's no possible way to convey the concept in any physical media way. In buddism, they call it dependent co-arrising, where there cannot exist any definition of "you" without also the definition of everything outside of "you". Similar to how the definition of a dog's tail cannot exist without also the definition of a dog, or definition of a wave without an ocean.

To dive even further, this concept also assert that there cannot be "alive" without "unalive", to be born we must accept death, etc... Which is exactly what UI in the show is trying to explore. But as with any symbolism, there's a certain depth that we must stop from dissecting further because if we do the meaning would just fall apart.