“Actually, in this case, the ORIGINAL document almost certainly no longer exists.”
Only complete morons or deviant operatives would toss original birth certificates after they are scanned. Systems crash, files get corrupted, etc. Ever heard of long-term storage? It’s what competent agencies do when they scan important documents.
There is no logical reason to believe the ORIGINAL birth certificate has been officially destroyed.
You may be correct. I could be wrong about that, and it may be in a box or on a shelf somewhere. I don't know the storage policies of government agencies when it comes to original documents dating from 50 years ago.
There is at least one site on the internet claiming that when Hawaii went paperless, the original documents were placed in long-term archival storage. So you may well be correct on that point.