That is just a shitpost.
But given that it is user-generated content that is not under any kind of controls or censorship, there are inappropriate mods available there are also other types of modified content like skins and texture packs.
This had to be done by uploading patches from your computer to your console, which is a lot of hard work.
Along with the zombies, they wanted booty.
Become an ally, not an enemy.
Might be an unknown mod that's released to the public but only 2 persons know about it.