What’s acceptable is subjective, but generally not entirely individual. We tend to listen to our peers a lot to learn how we feel about things.
I was talking to a friend who at the time was a member of parliament for the Pirate Party in Iceland, and he said, jokingly, that he wanted to past a law that forced Facebook to allow full nudity in Facebook for users in Iceland. And ban anything to do with guns or violence, including stuff from Hollywood which wasn’t real.
This wasn’t serious. It was a thought experiment. Why did Icelandic users, in Iceland, talking to other people in Iceland, have to conform to the content standards of a California corporation?
If Germany can pass a law banning nazi symbols and companies all over the world enforce it upon users in Germany, why shouldn’t other countries so something similar. What about forcing companies to allow content they’d otherwise block?
Anyway, on a more real level, for nostr, I think users should be able to self declare content warnings for individual posts or their entire feed. And it should be done with a tagging system, I believe Tumblr does this, so I decide I don’t agree with Icelandic social norms and don’t want to see nudity or sexual content. The Icelandic nostriches (is that what we’re called?) might not self declare warnings. So we clearly need to be able label other people’s posts or feeds.
I think apps should then only trust those labels based on the social graph. They shouldn’t display a random person’s content warning, but if it’s somebody you follow, then you probably trust them enough to use their warnings.