with great freedom comes great responsibilities including self-moderation of the content you see or do not see. What's illegal and who defines what's appropriate or not? Also something illegal in one country may not be in another country. Such as drugs in video games in Australia for example.
The level of content filtering I'd accept is algorithms that are activated by the user to filter THEIR nostr experience or to make their timeline "family friends"
Anything else is censorship or a group of people assuming the role of moderators who decide what others see or do not see and that's unacceptable because any group with that kind of power on the network will start dividing the users into factions because tribalism is what we do.