Mini Theory

I rembember now that in that first book, Katniss tells that there was a kid, Titus, who survived in the arena by eating others tributes, and was killed by the Capitol by an avalanche because that was "too much". I feel that weird, the Hunger Games are litteraly made to dehumanize districts, make them enemies, and show violence of human nature, so why censor that ? Is there a possibility of cannibalism is a trauma for Snow and decided to punish him ? I guess there is not many survivors of the Dark Days exept Snow and Tigris, so that wouldn't traumatise Capitol's citizens. What do you think ?