And even if they were written down, the Catholic church sure did love to burn books back then!
The "love to burn books" mostly happened during the Counter-Reformation, which is several centuries after this book would have been written.
what pittance of codices we have today come from Christianized Maya scribes, a massively condensed post-columbian highlight reel of their obliterated textual culture compiled at the behest of the Spanish crown and under the direction of their Catholic overseers.