Hahaha! I saw this tweethread: https://twitter.com/NotBrunoAgain/status/1335010005737680898
It is the source of the info that 53 people had a lot of ivory humeruses.
It also explains why they made this change: …because apparently, humeruses were always supposed to give 1500 in skeleton value. In the game’s internal documentation, it had always said 1500. It was just apparently mis-entered when it was first implemented. And nobody really noticed until they ran across it when doing this economy rebalance.
The change from 3000 to 1500 wasn’t some big balance tweak that they gamed out. It was just a bugfix, like fixing a typo - “oops, someone entered 3000 when it was supposed to be 1500, better fix it.”