We don't know that, also Home Alone is hardly the first film to do this kind of thing (Straw Dogs comes to mind right away), nor was it the last (Skyfall anyone). That's probably the climax of the film at most.
Also he specified that he meant "just another war film" when he said "same old same old."
it was a joke
This movie will probably play well with Trump’s base. The all American warrior kills evil Mexicans.