author here. Update: the site had already been discovered. It appears in a 2025 paper by Estrada-Belli, Canuto, Šprajc & Fernandez-Diaz (page 14) https://doi.org/10.1016/j.jasrep.2025.105288. The agents missed it, I missed it, and it wasn't in INAH's register yet (National Institute of Anthropology and History). The rest of the story still holds, and there's still a lot left to discover with vibe-archeology. I hope this brought some extra excitement to archaeology.