Thank you for reaponding with specific claims. Others have already addressed the technicals (the packages themselves don't include NSFW offending material, they are merely engines or interfaces), but I thought I would point out that in American workplaces talking about violence is absolutely commonplace, as it is in the rest of the prevailing culture surrounding us.

It's absolutely common for people to be descriptive about the violence they see in entertainment, or to discuss violent real world matters.

Even if you set aside the critique of violence espoused in the Christian Bible, there is a mountain of adult themes and sexually explicit abuses which our categorically not safe for work in most places.

The doom 'game' idTech4a++ is actually only a game engine that you have to provide the Doom/wolf/etc game files for if you want to use. Therefore, the engine itself is not NSFW. The pokemon 'game' I see is 'Pokeverse' which is a deckbuilder/trainer app that just accesses an API online to access that data. Not NSFW. I don't see how Pokemon would be NSFW anyway.

Got any actual concrete examples because I'm seeing nothing that would fall in the bounds of NSFW?