There's no reason not to limit those requests to trusted relays that host clean content. You could also maintain a list of foodie npubs, and/or your team and committed users (or a bot) could scan wider swath of the network & republish content... then blend these things into a feed with the client's home relay. Continuing to pull directly from public-to-write relays for the main feed invites in spammers, which is a much worse experience for everyone than some new user not having a first post seen because it chases off the lurkers, too. More and more, existing users are withdrawling themselves from public relays and blocking them because they don't want to get spammed themselves or they don't want their notes to be associated with the nasty stuff that ends up hosted there. If someone wants to see those notes, they can follow the spammy & nasty authors, who, by sane metrics, should be forced by the network into running their own relays for that stuff. That's kind of, in a strange way, the whole point of all this. Curated feeds should be strict and strongly opinionated, that's what makes them interesting and nice to browse. It's just really a shame to me that things like porn will randomly show up in a cooking app when simple preventative solutions exist and work.