An automated system was already made to collect and sort them, that system should provide it's sources. I can self-fact-check anything, but a system that could provide origin sources and didn't is just AI slop.

If human-generated content like this did not provide source would that be called “human slop”? what about system automated by a human coder without help of AI, also “human slop”?

Just „slop“. News usually either come from a reputable source, with internal standards you trust (newspaper). Or from someone who mentions their sources.