To be clear, Mononoke is the server-side part of the Sapling system as deployed at Meta. Scion appears to be very closely inspired by Mononoke.

Sapling does a bit more than cite Mononoke. And Oxide was not involved in Mononoke's development. These are kind of details that would not be expected of a casual user. However, when valuations soar into the trillions, we can expect companies with dedicated writing staff to communicate attribution properly.