Deletion of German youth language

Comment: and objections.  The problem is that the sources are about "youth language" and are written in German, they're not about "German youth language" as far as I can tell.  IT IS  to assume that the German-language sources are talking about German language teens simply because they are in German.  I know there isn't a rule requiring English sources - but unless one is found, I will continue to believe this is a mix of "unsourced slang", and scholarly papers that aren't intended to be specifically about German but simply get the word "German" thrown in a bunch during bad translations to English.  It is as if I translated Youth culture into French and called the article "American youth culture", claiming that "in English speaking countries, {{tq|there are many distinct and constantly changing youth subcultures}}".  IT IS 
Stance: comment
Cited policy: Wikipedia:No original research (WP:SYNTH||WP:SYNTH)