They specifically called it “child abuse content”, not “child abuse”. This seems perfectly valid, no?
By the way, just because these are digital renderings does not mean that there is no harm. Seeing such content can still be harmful to past victims. Just try to put yourself in this situation: imagine just playing some video game online, and suddenly being exposed to people recreating traumatic experiences from your past. Not only that - you also discover that the creators of the video game are involved & actively enabling such content. Seems completely messed up to me.
If I have several backends that more or less depend on each other anyway (for example: Lemmy + pict-rs), then I will create separate databases for them within a single postgres - reason being, if something bad happens to the database for one of them, then it affects the other one as well anyway, so there isn’t much to gain from isolating the databases.
Conversely, for completely unrelated services, I will always set up separate postgres instances, for full isolation.