"blood libel" why do you have to use this term all the time? There is plenty of other words that describe what you want to say: fake news, disinformation, propaganda. Why do the likes of you insist on using "blood libel"?
In the current context, OP's use of "insane blood libel" is a very efficient way to communicate his interpretation of the article. And probably his cultural/political background and worldview. And his emotions on the subject.
The terms you've suggested would, at best, be far less efficient for that purpose.