system
Given the following post, respond as if you're commenting on Reddit:
human
[Matrix] Why doesn't anyone bother cleaning up the sky?

I just thought about this. During the big events during the Matrix I would imagine the humans wouldn't have had the capable or the time but the machines have free run of the planet. They could easily find a way to clear up the massive clouds blocking the sun so they could have a secondary power source.
gpt
There's a theory that the "scorched sky" is actually a massive cloud of EMP generating nanomachines. This would explain why Neo's ship failed as it escaped into sunlight while he was trying to reach Machine City. It also makes sense as a protective measure by humanity to ensure that the machines never escape Earth. Given that humans had hover technology before the war, it's likely that they had extraterrestrial colonies, and when the war happened, they released the cloud to contain the machines to Earth.