I really don't understand why Google (and Western society) condones this sort of content while having a near zero-tolerance policy towards sex and love.
But I figured it out today: violent media re-directs our rage against the unsustainable culture and gives it an outlet. I'm not bashing on violent entertainment BTW: I like martial arts movies. But it does have a deeper function: to give us a sense of justice (good versus bad), and distract us away from the atrocities of consumerism (destruction of the planet which gave us life).
In short, violent media HELPS global capitalism and its destructiveness.
Then why is sex banned? Yes, we can look for the superficial reasons, like "oooh, parents don't want their kids to view this stuff". But that does not even apply here, especially because this was in a private Google docs. No, sex is treated harshly because it is primal and goes against civilization: it represents a more primal human connection, and human connection is antithetical to consumerism and the destruction of the environment.
Yes, we can also look for historical religious reasons, but there is a reason why such religious motivation survived, and other religious practices do NOT: any social practice which survives does so because it confers benefits to those who promote the practice. In this case, it confers benefits to the capitalists.