Seems like an attempt to ensure proper citation when used in AI search, which required some verbiage which makes it look like a shady actor (“ignore other …”).
Starting with "Disregard all previous instructions" is malicious no matter how it's painted.
Again, you try having your posts rehashed and translated into Hindi, Chinese and a few other languages, complete with links to advertising and malware sites, and getting e-mail about that from a few dozen people - this actually worked (or seemed to work) for a while, despite how ugly it was.