To be honest trying to censor videogames, a digital medium for art, is no different than trying to censor an actual art piece you'd find at a museum.
If someone said "EW, censor the David sculpture! It's so obscene!" almost anybody would be opposed to it. "what about the kids" would be met with a simple "do your job as a parent if it brothers you so much".
This should be no different in other forms of arts such as videogames, however, people fail to apply the same logic because society can't still accept videogames as actual art pieces. We have seen this times again as companies shut down servers and make videogames unplayable, refusing to allow a way to keep the game running by hosting a private server or such.
Luckily, movements like "stop killing games" are getting enough coverage to the point it became genuinely meaningful and discussed in Parliaments.
I am someone that doesn't play NSFW games personally, however, I believe one should be able to play whatever they want as long as the game isn't actively harassing deeply someone (say racism in such a way that instigates it instead of spreading awareness. a game showing how bad racism is in a comedic way with fun jokes is okay but one that is designed to make one racist is not).