Set up a relay, write in the rules that it's Family Friendly, blacklist any npubs that break the rules, hey presto, your space that meets your rules.

I run nostr.naut.social as an "unmoderated" relay, but if people wanted to pay a buck a month for a team of moderators monitoring Global (that relay only) 24 hours a day in real time, and nuking bad notes/npubs back of the envelope....

7 times 24 is 168 hours at say 50 bucks an hour (for all in costs), call it 200 hours at 50 an hour, assume most people obey the rules, 10,000 people at a buck a month is breakeven.

If you are tapped into such a group (churches?) you have your own safe space. Meanwhile over on the other relay, the MAGA, an in that other corner, Drag Queens.