IMHO The movie started out much better than it ended.

Consider the premise; human trafficking, a heroic Mexican Journalist (a whole bunch have been tortured to death for speaking out) and an aging Rambo finally in over his head.

Ends with a wildly improbable finish, even by Rambo standards.

"...if the gentlemen of Virginia shall send us a dozen of their sons, we would take great care in their education, instruct them in all we know, and make men of them." Canasatego 1744