If the term originated on 4chan, then there's little doubt it derived from "goyslop," given how common the usage of "goyslop" was and is there, and how similar are the connotations: overlords feeding their "cattle" an unhealthy facsimile of something, editable or digital, to physically or mentally sicken them and render them docile & subservient. The people here who don't see the connection also fail to demonstrate any familiarity with imageboard culture and its memes. Even in this thread, at least one other person noted the link before me (and got flagged for it)[1], and the Wiktionary entry cites "goyslop" as a related term[2].
The only question remaining is whether it did, in fact, originate on 4chan. If it saw some usage outside of imageboards before November, 2022, then that undermines the argument. But if 4chan birthed it, then "goyslop" was surely its inspiration.