I whitelist after visiting a page, if it breaks majorly so I can't use it. And often I only need to allow the main page's scripts and maybe video., img. or cdn. subdomains.
There's nothing that explains it on its description page. Based on comments on its page (translated to English), my wild guess is: it's making people laugh while reading news somehow by changing names of politicians in the news articles.
Damn, I just noticed I accidentally wrote in german, I didn't even notice the post is in english lol. To Germans it would make sense, as it's exactly what you noticed; it just changes Annegret Kramp-Karrenbauers name to something funny, she's an ex-defense minister of Germany.