Miasma is just a wrapper around the "Poison Fountain". You can check out the explanation and sample some of their content here: https://rnsaffn.com/poison3/
It's pretty much exactly what you're describing: content that looks correct but is deeply insane.
AI companies continually scrape the internet at an enormous scale, swallowing up all of its contents to use as training data for their next models. This tool helps you trap scrapers in an endless pit of poisoned training data from the poison fountain.
It's pretty much exactly what you're describing: content that looks correct but is deeply insane.