I think this episode is the final nail in the coffin for downplayers. The Soul King created the entire cosmology from a primordial sea, which means no more arguments about a single universe being separated into three galaxy-level realms. Also, the planet-level argument doesn't hold up either, as he created everything. Each realm's stars, galaxies, and outer space, in general, were created by him, so claiming that his death would only destroy three planets is absurd. The death of the creator and stabilizer of everything would logically have a far greater impact than just affecting three planets across space-time.