First of all there's five endings. Second of all, you do realize that nsfw includes stuff like murder, cannibalism, and eating bunnies alive (all three are different endings btw)
That logic only works if your brain functions with less processing power than an expired hotdog. NSFW is an umbrella dipshit. It coveres a variety of things. Does it include pornography and sex? yes, obviously. can you watch that at work? no, obviously not, but you're also not going to go to work, then queue up some gore and watch it because, get this, it's fucking NSFW. That's not even mentioning the fact that most work places that DO have TVs, broadcast either cable shows, the news, or whatever movies are on, which 9/10, aren't going to feature things like gore or sex. Just because the game doesn't have anything for you to wank it to, which I'm sure is the ONLY reason you're complaining, because anything else would be stupid, doesn't mean it shouldn't be put as NSFW