https://www.ancient-warfare.org/rat/showthread.php?tid=31432
The poster in question is Steven James, who submits papers to academia.edu regarding the Republican Roman Army.
The core of his argument seems to stem from what he considers mathematical discrepancies regarding the size of armies during Scipio's African campaign.
Although I don't feel qualified to answer this myself, another user has responded to a similar article claiming that the Battle of Zama was a hoax:
https://old.reddit.com/r/AskHistorians/comments/89mauw/in_an_article_titled_the_trouble_with_zama/
In short, this conspiracy theory is not taken seriously by most scholars in the field.