hodlbod on Nostr: I've noticed that too. This is not hard to solve, if the person writing the NIP wants ...

I've noticed that too. This is not hard to solve, if the person writing the NIP wants it to be found. They can do a NUD, or they can submit a PR to the NIPs repo to link to an external NIP, which is also something that exists. But if people don't want to make sure people know about their own standards, there's not much anyone can do.