Ah you’re right. This made me realize this thread is about the observation identifier, but I’m looking for a unique identifier for the observation observer which I guess is a separate concern maybe warranting a different thread. Maybe on the GBIF forums.
Which is unsurprising, because ORCID is mainly used by researchers who publish in peer reviewed journals. We have many excellent identifiers on iNaturalist who do not publish research papers, and who therefore have no reason to set up an ORCID.