I haven't really found out much since this, but I did notice today that the currently unaccounted for SPT that I had delegated in that article IS showing up in-game as the correct amount of airdrop points and I also received a curation reward sometime recently so it's there and it's earning, I just can't see it. Hoping it all kinda just sorts itself out during an update and everything is magically back to where I can see it again. That'd be pretty cool lol