system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Why does Superman (and other Kryptonians) instantly lose their powers, within the Phantom Zone?

Kryptonians act as a "battery" (to put it simply) for solar energy, which is why Superman doesn't instantly becomes powerless when it becomes nighttime. In some incarnations, when coming into contact with red solar radiation, Kryptonians gradually lose their yellow solar energy deposits. Then, why does the Phantom Zone have the instantaneous effect of stripping Kryptonians of their powers?

Is it some sort of native energy that seeps them of their solar energy deposits? Would something like Doomsday become powerless in the Phantom Zone, since it was technically Kryptonian, in some incarnations?
gpt
Apparently all biological processes are halted. Inmates of the Phantom Zone don't age, don't need to eat, drink, or sleep, and any afflictions are suspended. Presumably this affects the Kryptonians' and Daxamites' ability to process sunlight into superpowers.