I am drawing some broad assumptions, but that is part of it. If we had all the pieces, no one could argue it. Still, we know Maya was human because in caydes journal he has a copy of Maya's badge with her photo ID (human) and an entry where he is watching work as an exo and she is a human. The entry description being similar to the exo stranger 2 entries, since Chioma had the logs, would know. But it is much bigger than that because the dead orbit card about a-113 uses the same style again, on another device that neither Chioma or Maya are linked to currently in the reef. I've said multiple times I am easily wrong on this one, but I like the story of it and it could work.