Uh... no? It's a simple, straightforward English phrase. Speech which is problematic, as opposed to speech which is not.
"Problematic" being defined as "constituting or presenting a problem or difficulty."
Racist speech in historical documents constitutes and presents a problem or difficulty for modern readers. That's kind of the entire premise of the posted article. There is no doublespeak or newspeak or whatever "1984" is supposed to imply, involved.