There are other authorities! Such as researchers, academics etc.

See: https://news.ycombinator.com/item?id=50453616

INAH said there's nothing registered there, nothing more than that. The results look fairly convincing but neither the OP, me and (I presume) you nor the commentor have archaeology experience. Perhaps there are other explanations for ground structures like this we just don't know till an expert visits the site and confirms that yes, it is a previously unmapped Mayan pyramid.

One potential reason there's no registered archaeological site at that location is that there _is_ no archaeological site at that location.

For example, the agents could have displaced a known archeological site, or hallucinated or otherwise created one where none exists