I really dislike HIP-16. Again, changing or failing to record history is probably not a good precedent to set. I'm also unclear as to where the 'supported_nips' field is to be found. Perhaps #[6] can clarify.
>From: Giszmo47 at 07/29/22 12:20:57 on wss://relay.nostr.info
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>The distinction here is replaceable events vs. non-replaceable ones. Please look into nip-16.