In general i refer back to the previous article. The system (from a childs perspective) leans heavily on the white-list mode of operation, and not (so much) on black-listing/filtering. The moment you trust a relay, you should generally agree with the type of content on that relay.
If you don't trust/agree with a relay policy; don't trust/use it on a relay-feed level. If you trust particular Npubs, it will fetch its content regardless from what relay it may happen to host it (outbox model).
It makes more sense for relays, that advertise themselves as relevant/adequate for children to be highly specialized. Think a school relay, or a media organization relay, a library relay, a relay managed by some parent group with a particular worldview/religion etc.
In general a lot more relays should specialize more, and in a way you could think of relays as websites nostr:nevent1qqsd3n5gz9lf29nkn4gdrgkee4qgq8psxr7ylfkqr9zcve3sz9d46usprdmhxue69uhhyetvv9ujuam9wd6x2unwvf6xxtnrdakj7q3q80cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsxpqqqqqqznng7sl