Although I don’t like the political strong-arming that defederation is allowing, I would still vote to remove the clause in this case.
The Visual Novels community, and by extension the whole instance, have not contained the content in question. In the interest of keeping the community accessible to everyone and keeping the instance “comfy and snug” I think it is better to have our rules better conform with the wider lemmy community.
I’ve always liked this, it has pretty much everything you could want in a personal project: a catchy name and a whimsical idea that is just on the edge of being actually practical.
Key games are pretty safe, since there is usually nothing to censor.