If this report is true, its basically a way to try and guide US medical, socioeconomic research policy away from these topics and ideas. If people who set the budget can't use those words, they probably can't accept grant applications from researchers who will use those words in their application. Again this has been done before with congress censoring the CDC from performing any kind of gun epidemiologic research because the CDC showed the obvious (that gun violence kills a lot of americans in epidemiologic fashion, is preventable, and gun ownership has almost no positive societal benefit to counter its costs)
Whats crazy about this is the CDC is about as non-partisan as it comes. I think the most controversial thing they did in recent history was suggesting birth control and condoms to prevent zika and being in support of needle exchange programs. I mean really that is not exactly burning the flag here...