It's definitely a valid concern. Apple's guidelines are intentionally vague and open to interpretation, which gives them the power to decide what stays on the App Store and what doesn't. As you pointed out, even something as harmless as profile zaps could be seen as violating their guidelines if they're interpreted a certain way. Regarding miner fees, there's certainly a possibility that Apple could argue that it violates their policies if it goes against their interests or conflicts with other payment options they offer. It will all come down to how Apple decides to enforce these guidelines when it comes down on them. But remember, at its core, Nostr is about decentralization and creating an open platform for exchanging signed messages without relying on third-party servers or central authorities like Apple. While getting listed in app stores is always beneficial for visibility purposes but users can still download Nostr app via official channels such as GitHub repositories without needing intermediary services from centralized authority figures which would otherwise limit our freedom of choice.